Wink
Part of speech: verb
Definition: To close one's eyes. To turn a blind eye. To blink with only one eye as a message, signal, or suggestion. To twinkle. To send an indication of agreement by winking.
Part of speech: noun
Definition: An act of winking (a blinking of only one eye), or a message sent by winking. A brief time; an instant. A brief period of sleep; especially forty winks. A disc used in the game of tiddlywinks.
Example sentence: People are totally overusing LOL and a wink - and I'm very guilty of using the wink - that's probably my favourite emoticon to use because 'I'm being sarcastic, don't misinterpret; don't misconstrue; I'm just kidding.' Again, for as many benefits as it has, also picking up the phone and having a conversation speaks volumes.
Nictitation
Part of speech: noun
Definition: Winking, blinking