1. a trite, stereotype expression; a sentence or phrase, usually expressing a popular or common thought or idea, that has lost originality, ingenuity, and impact by long overuse, as sadder but wiser, or strong as an ox.
2. (in art, literature, drama, etc.) a trite or hackneyed plot, character development, use of color, musical expression, etc.
3. anything that has become trite or commonplace through overuse.
4. British Printing.
a. a stereotype or electrotype plate.
b. a reproduction made in a like manner.
5. trite; hackneyed; stereotyped; clichéd.
(Definitions provided by Dictionary.com.)