- The definition of a trifecta, also called a triple, is type of bet in which someone wins if they correctly guess the 1st, 2nd and 3rd place winners of a race.
An example of a trifecta is naming all three top finishers of a horse race.
trifecta definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
a bet or betting procedure in which one wins if one correctly picks the first, second, and third place finishers in a race
Origin: tri- plush (per)fecta
trifecta definition by American Heritage Dictionary
A system of betting in which the bettor must pick the first three winners in the correct sequence. Also called triple.
Origin: tri- + (per)fecta.