Also found in: Idioms, Wikipedia.
A finish in a contest or race in which the winner comes from behind at the last moment.
[After Edward Henry ("Snapper") Garrison (1868-1930), American jockey.]
the finish of a race, esp. a horse race, in which the winner comes from behind to win at the last moment.
[1930–35; probably after Edward (“Snapper”) Garrison, 19th-century U.S. jockey]