1. (v. i.) To nod; to sleep; to nap.

2. (v. i.) To shut the eyes quickly; to close the eyelids with a quick motion.

3. (v. i.) To close and open the eyelids quickly; to nictitate; to blink.

4. (v. i.) To give a hint by a motion of the eyelids, often those of one eye only.

5. (v. i.) To avoid taking notice, as if by shutting the eyes; to connive at anything; to be tolerant; -- generally with at.

6. (v. i.) To be dim and flicker; as, the light winks.

7. (v. t.) To cause (the eyes) to wink.

8. (n.) The act of closing, or closing and opening, the eyelids quickly; hence, the time necessary for such an act; a moment.

9. (n.) A hint given by shutting the eye with a significant cast.

Roman candle aid to navigation alarm amber light balefire bat bat the eyes beacon beacon fire beat the drum bell bell buoy blanket drill blink blinker blue peter breath broad hint buoy cast cat nap caution light clue coup crack cue dash dip exchange colors flag flag down flare flash flutter fog bell fog signal fog whistle foghorn forty winks gentle hint gesture give a signal give the nod glance glimmer glimmering glimpse go light gong buoy green light hail hail and speak half a jiffy half a mo half a second half a shake half an eye half-mast heliograph high sign hint hoist a banner implication index indication inkling innuendo insinuation instant international alphabet flag international numeral pennant intimation jiff jiffy kick leer look make a sign marker beacon microsecond millisecond minute moment nap nictitate nod nudge parachute flare peek peep pilot flag poke police whistle prompt quarantine flag quick sight radio beacon raise a cry rapid glance red flag red light rocket sailing aid salute scent sec second semaphore semaphore flag semaphore telegraph shade shake siesta sign signal signal beacon signal bell signal fire signal flag signal gong signal gun signal lamp signal light signal mast signal post signal rocket signal shot signal siren signal tower signalize slant smack snooze sound an alarm sound the trumpet soupcon spar buoy speak split second spoor spot of sleep squinch squint squiz stop light stroke suggestion suspicion symptom telltale the nod the wink tick touch trace track traffic light traffic signal trice twink twinkle twinkling twitch two shakes unfurl a flag watch fire wave wave a flag wave the hand whisper white flag wigwag wigwag flag wink of sleep yellow flag