four flush

US: (fôr′flush′, fōr′-)

WordReference Random House Unabridged Dictionary of American English © 2025

four′ flush′, [Poker.]

1. Games a hand having four cards of one suit and one card of another suit;
   an imperfect flush.

• 1885–90, American.

four-flush  (fôr′flush′, fōr′-), v.i. 

1. to bluff.
2. Games [Poker.] to bluff on the basis of a four flush.

• 1895–1900, American.

Collins Concise English Dictionary © HarperCollins Publishers::

four flush noun

1. a useless poker hand, containing four of a suit and one odd card

verb (intransitive)

1. 
   a slang word for bluff1