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.