nudge

American Heritage® Dictionary of the English Language, Fourth Edition

1. v. To push against gently, especially in order to gain attention or give a signal.
2. v. To come close to; near: "The temperature was nudging 105 degrees in the shade” ( Scouting).
3. n. A gentle push.
4. n. One who persistently pesters, annoys, or complains.
5. v. To annoy persistently; pester.
6. v. To complain or carp persistently.

Century Dictionary and Cyclopedia

1. To touch gently, as with the elbow; give a hint or signal to by a covert touch with the hand, elbow, or foot.
2. n. A slight push, as with the elbow; a covert jog intended to call attention, give warning, or the like.

Wiktionary

1. n. A gentle push.
2. n. Internet A feature of instant messaging software used to get the attention of another user, as by shaking the conversation window or playing a sound.
3. n. The rotation by one step of a reel of the player's choice.
4. v. transitive To push against gently, especially in order to gain attention or give a signal
5. v. transitive To near or come close to something

GNU Webster's 1913

1. v. To touch gently, as with the elbow, in order to call attention or convey intimation.
2. n. A gentle push, or jog, as with the elbow.

WordNet 3.0

1. v. push into action by pestering or annoying gently
2. v. to push against gently
3. n. a slight push or shake