Betting has a vocabulary that assumes you already know it. This glossary covers the 60-plus terms an Irish punter actually meets — on betting sites, at the track, and in the group chat — each in one honest sentence, with links to our full guides where a term deserves more than a sentence.
A–C
Acca / accumulator — one bet combining several selections; every leg must win, and the bookmaker’s margin multiplies across legs — see our acca calculator.
Ante-post — betting on a future event (e.g. Cheltenham in March) weeks or months out, usually at bigger prices but normally with no refund if your pick doesn’t run — see ante-post betting.
Arb (arbitrage) — backing all outcomes across different bookmakers at prices that guarantee a small profit; bookmakers restrict accounts that do it systematically.
Asian handicap — a football handicap market with no draw, including half- and quarter-goal lines — explained in our Asian handicap guide.
Banker — a selection considered near-certain, often the anchor of an acca; the odds say it isn’t certain.
Bet builder — combining several markets from one match into a single price — convenient, but the margins compound; see bet builder maths.
BOG (best odds guaranteed) — a racing concession: take an early price and get paid at the SP if that’s bigger; always a stated promotion, never a right.
BTTS — both teams to score — see our BTTS guide.
Canadian (Super Yankee) — a full-cover bet on five selections: 26 bets (10 doubles, 10 trebles, 5 four-folds, 1 five-fold).
Cash out — settling a bet early at the bookmaker’s offered value, which always embeds a fresh margin — see cash out explained.
Closing line — the final odds before an event starts; beating it consistently is the classic test of whether a punter has real judgement.
Correct score — predicting the exact final score — high odds, high margin; see correct score betting.
D–G
Dead heat — an unseparable tie; your stake is divided by the number of tied competitors — see dead heat rules.
Double / treble — an acca of exactly two or three selections.
Double chance — covering two of the three football outcomes in one bet at a correspondingly short price — see double chance.
Draw no bet — stake refunded if the match is drawn — see draw no bet.
Drift — odds lengthening before an event because money is going the other way; a drifter is the horse doing it.
Each-way — two bets in one — win and place — so the total cost doubles; see our each-way calculator.
Edge — the amount by which your estimate of a probability beats the price; without one, the margin decides the long run.
Evens (even money) — odds of 1/1 (decimal 2.00): win exactly what you stake.
Exchange — a platform where punters bet against each other and the operator takes commission — see exchange vs bookmaker.
Favourite / outsider — the shortest- and longest-priced runners in a market; the jolly is track slang for the favourite.
Fold — counts legs in an acca: a five-fold has five selections.
Form — the recent-results record used to judge a competitor; reading it is necessary and nowhere near sufficient.
Full cover — a system bet placing every possible combination from your selections — Trixie, Yankee, Heinz and friends; see full-cover bets.
Goliath — the biggest common full-cover bet: eight selections, 247 bets.
H–L
Handicap — a market where one side gets a virtual head start to even things up.
Hedge — betting the other way to lock in profit or cap loss on an existing position.
Heinz / Super Heinz — full-cover bets on six selections (57 bets) and seven (120 bets).
HT/FT — predicting the half-time and full-time result in one bet — see HT/FT explained.
Implied probability — the chance a price asserts: 1 divided by decimal odds — the key to everything; see our guide.
In-play / live betting — betting after the event has started, at rapidly repriced odds — see in-play betting.
Joint favourites — two or more runners sharing the shortest price.
Juice / vig — American slang for the bookmaker’s margin.
Lay — to bet against an outcome, taking the bookmaker’s side — possible for punters on exchanges.
Liability — the amount a layer stands to lose if the outcome they laid wins.
Lucky 15 / 31 / 63 — full-cover bets including singles on four, five and six selections (15, 31 and 63 bets) — see Lucky 15 calculator.
M–P
Margin / overround — the sum of a market’s implied probabilities above 100% — the real price of betting; see margin explained.
Nap — a tipster’s most confident selection of the day.
Non-runner — a horse or player withdrawn before the off; single bets are normally refunded and remaining prices adjusted under Rule 4.
NRNB (non-runner no bet) — an ante-post concession refunding stakes on non-runners, usually at shorter prices than the ordinary ante-post book.
Odds-against / odds-on — prices longer than evens (e.g. 3/1) versus shorter (e.g. 1/3) — odds-on means risking more than you win.
Outright — betting on a whole competition’s winner rather than one fixture — see outrights & futures.
Palpable error — an obviously wrong price (a “palp”); bookmaker terms let them void or resettle such bets, a regular source of disputes.
Patent — full cover with singles on three selections: 7 bets.
Photo finish — a finish too close to call by eye, decided from the camera; until then the result is unofficial.
Place — finishing in the paid positions (e.g. top 3–5) rather than winning; the second half of an each-way bet.
Punter — the person reading this glossary.
Push — a stake refund when a handicap or total lands exactly on the line.
R–S
Related contingency — two selections whose outcomes affect each other (a player to score and his team to win); bookmakers won’t acca them at full multiplied odds.
Rule 4 — the standard deduction applied to winning racing bets when a non-runner shortens the remaining field’s true odds.
SP (starting price) — the official odds at the off, compiled from on-course bookmakers; the default settlement price if you didn’t take an early price.
Single — one selection, one bet — the lowest-margin way to back an opinion.
Stake — the amount risked; “stakes returned” matters when comparing fractional and decimal odds.
Steamer — a runner whose odds are shortening fast under a weight of money.
System bet — any multi-combination bet (full covers, folds from a bigger list) as opposed to a straight single or acca.
T–Z
Tissue — the odds compiler’s first draft of a market, before money moves it.
Tote / pool betting — betting into a shared pool at racecourses where the dividend depends on how many holders share it, rather than fixed odds.
Trixie — full cover without singles on three selections: 4 bets (3 doubles, 1 treble).
Under/over (totals) — betting on whether a match statistic clears a line, most commonly 2.5 goals — see over/under goals.
Value — a price longer than the true probability justifies; the only thing a long-term winner is ever buying.
Void bet — a cancelled bet with the stake returned, settled at odds of 1.00 inside an acca — see void bets & settlement.
Yankee — full cover without singles on four selections: 11 bets.
Terms in hand, the rest is arithmetic and restraint. Betting is for over-18s only — support is free from the Gambling Awareness Trust on 1800 753 753 and at gamblingcare.ie.
Frequently Asked Questions
Both cover four selections, but a Yankee is 11 bets (doubles, trebles and the four-fold) while a Lucky 15 adds the four singles to make 15 bets — it costs more but returns something on a single winner.
Odds shorter than even money, such as 1/3: you must risk more than you stand to win. It signals a strong favourite — not a certainty.
Add up the implied probabilities (1 ÷ decimal odds) of every outcome in a market; whatever exceeds 100% is the overround — the bookmaker’s built-in margin and the real cost of every bet.