Wink  —v. 1 (often foll. By at) close and open one eye quickly, esp. As a signal. 2 close and open (one or both eyes) quickly. 3 (of a light etc.) Twinkle; (of an indicator) flash on and off. —n. 1 act of winking. 2 colloq. Short sleep.  in a wink very quickly. Wink at purposely avoid seeing; pretend not to notice.  winker n. (in sense 3 of v.). [old english]