Quick definitions from WordNet (flush)

▸ noun:  a sudden rapid flow (as of water) ("He heard the flush of a toilet")
▸ noun:  a poker hand with all 5 cards in the same suit
▸ noun:  sudden reddening of the face (as from embarrassment or guilt or shame or modesty)
▸ noun:  sudden brief sensation of heat (associated with menopause and some mental disorders)
▸ noun:  a rosy color (especially in the cheeks) taken as a sign of good health
▸ noun:  the swift release of a store of affective force
▸ noun:  the period of greatest prosperity or productivity
▸ verb:  cause to flow or flood with or as if with water ("Flush the meadows")
▸ verb:  flow freely ("The garbage flushed down the river")
▸ verb:  rinse, clean, or empty with a liquid ("Flush the wound with antibiotics")
▸ verb:  make level or straight
▸ verb:  irrigate with water from a sluice
▸ verb:  turn red, as if in embarrassment or shame
▸ verb:  polish and make shiny
▸ adjective:  having an abundant supply of money or possessions of value ("A speculator flush with cash")
▸ adverb:  squarely or solidly ("Hit him flush in the face")
▸ adverb:  in the same plane ("Set it flush with the top of the table")

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▸ Also see flush