Definition of

Flush

  1. (noun, time) the period of greatest prosperity or productivity
  2. (noun, state) a rosy color (especially in the cheeks) taken as a sign of good health
  3. (noun, state) sudden brief sensation of heat (associated with menopause and some mental disorders)
  4. (noun, group) a poker hand with all 5 cards in the same suit
  5. (noun, feeling) the swift release of a store of affective force
    what a boot!
    he got a quick rush from injecting heroin
    he does it for kicks
  6. (noun, event) a sudden rapid flow (as of water)
    there was a little gush of blood
    she attacked him with an outpouring of words
  7. (noun, act) sudden reddening of the face (as from embarrassment or guilt or shame or modesty)
  8. (verb, body) turn red, as if in embarrassment or shame
  9. (verb, change) flow freely
  10. (verb, perception) glow or cause to glow with warm color or light
  11. (verb, contact) make level or straight
  12. (verb, change) rinse, clean, or empty with a liquid
    purge the old gas tank
  13. (verb, change) irrigate with water from a sluice
  14. (verb, change) cause to flow or flood with or as if with water
  15. (adj, all) of a surface exactly even with an adjoining one, forming the same plane
    the bottom of the window is flush with the floor
  16. (adj, all) having an abundant supply of money or possessions of value
    a speculator flush with cash
    not merely rich but loaded
    moneyed aristocrats
    wealthy corporations
  17. (adv, all) squarely or solidly
  18. (adv, all) in the same plane

via WordNet, Princeton University

Origin of the word Flush

  1. "fly up suddenly," c.1300, perhaps imitative of the sound of beating wings, or related to flash via its variant flushe. Probably not connected to O.Fr. flux, source of flush (n.). Transitive meaning "to cause to fly, start" is first attested mid-15c. The sense of "spurt, rush out suddenly, flow with force" (1540s) is probably the same word, with the connect… more
  2. "even, level," c.1550, perhaps from flush (v.) through the notion of a river running full, hence level with its banks. Applied to money since at least c.1600. more
  3. "hand of cards all of one suit," 1529, perhaps from M.Fr. flus (15c.), from O.Fr. flux "a flowing," with the sense of "a run" (of cards), from L. fluxus "flux," from fluere "to flow" (see fluent). The form in Eng. probably was influenced by flush (v.). more

via Online Etymology Dictionary, ©2001 Douglas Harper

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