slang

Short definition from Wiktionary

Noun

1. 1
   Language outside of conventional usage and in the informal register.
2. 2
   Language that is unique to a particular profession or subject; jargon.
3. 3
   The specialized language of a social group, sometimes used to conceal one's meaning from outsiders; cant.
4. 4
   A particular variety of slang; the slang used by a particular group.
5. 5
   An item of slang; a slang word or expression.
6. 6
   A curse word.
7. 7
   Any long, narrow piece of land; a promontory.
8. 8
   A fetter worn on the leg by a convict.
9. 9
   A counterfeit weight or measure.
10. 10
    A travelling show, or one of its performances.
11. 11
    A hawker's license.
12. 12
    A watchchain.

Verb

1. 1
   To vocally abuse, or shout at.
2. 2
   simple past of sling
3. 3
   To sell (something, especially illegal drugs).