wink

v. close one eye; blink the eyes; blink, flicker; insinuate with a wink; signal by winking

n. act of closing one eye; blinking of the eyes; innuendo or hint that is expressed by the wink of an eye; brief moment, second (like the wink of an eye); flashing or twinkling of a light; short nap, little sleep (Informal)

WINK can refer to:WINK-TV, a television station located in Ft. Myers, FloridaWINK-FM, an FM radio station located in Ft. Myers, FloridaWINK (AM), an AM radio station located in Ft. Myers, Florida
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The wink is an intentional facial expression made by briefly closing one or both eyes (http://dictionary.reference.com/browse/wink).  To wink is to close and open either one or both eyelids with a rapid motion; to blink suggests a sleepy, dazed, or dazzled condition in which it is difficult to focus the eyes or see clearly. A wink is a form of semi-formal communication, which indicates shared, unspoken knowledge.
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Noun
1. a very short time (as the time it takes the eye blink or the heart to beat); "if I had the chance I'd do it in a flash"
(synonym) blink of an eye, flash, heartbeat, instant, jiffy, split second, trice, twinkling, New York minute
(hypernym) moment, minute, second, bit
2. closing one eye quickly as a signal
(hypernym) facial expression, facial gesture
3. a reflex that closes and opens the eyes rapidly
(synonym) blink, eye blink, blinking, winking, nictitation, nictation
(hypernym) reflex, instinctive reflex, innate reflex, inborn reflex, unconditioned reflex, physiological reaction
(hyponym) palpebration
(derivation) blink, nictitate, nictate
Verb
1. signal by winking; "She winked at him"
(hypernym) gesticulate, gesture, motion
2. gleam or glow intermittently; "The lights were flashing"
(synonym) flash, blink, twinkle, winkle
(hypernym) radiate
(hyponym) flicker, flick
3. briefly shut the eyes; "The TV announcer never seems to blink"
(synonym) blink, nictitate, nictate
(hypernym) act involuntarily, act reflexively
(hyponym) palpebrate
(derivation) blink, eye blink, blinking, winking, nictitation, nictation
4. force to go away by blinking; "blink away tears"
(synonym) blink, blink away
(hypernym) suppress, stamp down, inhibit, subdue, conquer, curb

n. sign, hint, wave, beckoning gesture, beck

v. wave, beckon, signal, gesture, hail, greet

(v. t.)
To cause (the eyes) to wink.
  

(v. i.)
To shut the eyes quickly; to close the eyelids with a quick motion.
  

(v. i.)
To nod; to sleep; to nap.
  

(v. i.)
To give a hint by a motion of the eyelids, often those of one eye only.
  

(v. i.)
To close and open the eyelids quickly; to nictitate; to blink.
  

(v. i.)
To be dim and flicker; as, the light winks.
  

(v. i.)
To avoid taking notice, as if by shutting the eyes; to connive at anything; to be tolerant; -- generally with at.
  

(n.)
The act of closing, or closing and opening, the eyelids quickly; hence, the time necessary for such an act; a moment.
  

(n.)
A hint given by shutting the eye with a significant cast.