gab

Short definition from Wiktionary

Noun

1. 1
   Idle chatter.
2. 2
   The mouth or gob.
3. 3
   One of the open-forked ends of rods controlling reversing in early steam engines.
4. 4
   Initialism of gender-atypical behavior.

Verb

1. 1
   To jest; to tell lies in jest; exaggerate; lie.
2. 2
   To talk or chatter a lot, usually on trivial subjects.
3. 3
   To speak or tell falsely.

Proper noun

1. 1
   A diminutive of the male given name Gabriel.