four flush

noun, Poker.
1.
a hand having four cards of one suit and one card of another suit; an imperfect flush.
Origin
1885-90, Americanism

four-flush

[fawr-fluhsh, fohr-] /ˈfɔrˌflʌʃ, ˈfoʊr-/
verb (used without object)
1.
to bluff.
2.
Poker. to bluff on the basis of a four flush.
Origin
1895-1900, Americanism
British Dictionary definitions for four-flush

four flush

noun
1.
a useless poker hand, containing four of a suit and one odd card
verb (intransitive)
2.
to bid confidently on a poor hand such as a four flush
3.
(US & Canadian) a slang word for bluff1
Slang definitions & phrases for four-flush

four-flush

modifier

: Four-flushing hustlers who really knew how to gamble

verb
  1. To live by sponging off others, or by pretense and fraud
  2. To cheat; swindle; victimize

[1896+; fr a poker player's attempt to bluff when he has four cards of one suit showing and one of another suit not showing]