1 (blink) pestañeo; (m) (meaningful) guiño; (m) to give sb a wink guiñar el ojo a algn; he said with a wink dijo guiñando el ojo
to have 40 winks echarse una siesta cabezada;or
to tip sb the wink (informal) avisar a algn secretamente
2 (instant) I didn't sleep a wink I didn't get a wink of sleep no pegué ojo