TUC

[noun] [U] - abbreviation for the TUC the Trades Union Congress (= the British organization of the larger trade unions) tuck (TIDY) [verb] [T usually + adverb or preposition] - to push a loose end of (a piece of clothing or material) into a particular place or position, esp. to make it tidy or comfortableTuck your blouse into your skirt before you go out!She had a napkin tucked in the neck of her blouse.Richard came towards us tucking in his Hawaiian shirt as he walked. [M]He tucked the bottom of the sheet under the mattress.