wink

(noun): An act of winking (a blinking of only one eye), or a message sent by winking.
(noun): A brief period of sleep; especially forty winks.
(noun): A brief time; an instant.
(noun): The smallest possible amount.
(noun): A subtle allusion.
(verb): To close one's eyes in sleep.
(verb): To close one's eyes.
(verb): Usually followed by at: to look the other way, to turn a blind eye.
(verb): To close one's eyes quickly and involuntarily; to blink.
(verb): To blink with only one eye as a message, signal, or suggestion, usually with an implication of conspiracy. (When transitive, the object may be the eye being winked, or the message being conveyed.)
(verb): To gleam fitfully or intermitently; to twinkle; to flicker.