wink 
(wĭngk)
(wĭngk)v. winked, wink·ing, winks
v.intr.
1. To close and open the eyelid of one eye deliberately, as to convey a message, signal, or suggestion.
2. To close and open the eyelids of both eyes; blink.
3. To shine fitfully; twinkle: Harbor lights were winking in the distance.
v.tr.
1. To close and open (an eye or the eyes) rapidly.
2. To signal or express by winking: winked his agreement.
n.
Phrasal Verbs: 1.
a. The act of winking.
b. A signal or hint conveyed by winking.
2. The very brief time required for a wink; an instant.
3. A quick closing and opening of the eyelids; a blink.
4. A gleam or twinkle.
5. Informal A brief period of sleep.
wink at
To pretend not to see: winked at corruption in the ministry.
wink out
To come to a close; end.
[Middle English winken, to close one's eyes, from Old English wincian.]