nudge

Short definition from Wiktionary

Noun

1. 1
   A gentle push.
2. 2
   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. 3
   The rotation by one step of a fruit machine reel of the player's choice.
4. 4
   The use of positive reinforcement and indirect suggestions as ways to influence.
5. 5
   Alternative form of nudzh.

Verb

1. 1
   To push against gently, especially in order to gain attention or give a signal.
2. 2
   To near or come close to something.
3. 3
   To move slightly.