1. (v. t.) To move one way and the other with quick turns; to shake to and fro; to move vibratingly; to cause to vibrate, as a part of the body; as, to wag the head.

2. (v. i.) To move one way and the other; to be shaken to and fro; to vibrate.

3. (v. i.) To be in action or motion; to move; to get along; to progress; to stir.

4. (v. i.) To go; to depart; to pack oft.

5. (n.) The act of wagging; a shake; as, a wag of the head.

6. (n.) A man full of sport and humor; a ludicrous fellow; a humorist; a wit; a joker.