Dictionary definition · slang
noun
- informal language consisting of words and expressions that are not considered appropriate for formal occasions; often vituperative or vulgar"their speech was full of slang expressions"
- a characteristic language of a particular group (as among thieves)"they don't speak our lingo"
verb
- use slang or vulgar language
- fool or hoax"The immigrant was duped because he trusted everyone"
- abuse with coarse language
Source: Open English WordNet (CC BY 4.0).