'Colloquialism' definitions:
Definition of 'colloquialism'
From: WordNet
noun
A colloquial expression; characteristic of spoken or written communication that seeks to imitate informal speech
Definition of 'Colloquialism'
From: GCIDE
- Colloquialism \Col*lo"qui*al*ism\, n. A colloquial expression, not employed in formal discourse or writing. [1913 Webster]