city hall(1. [uncountable] American English the government of a city: The recycling program simply hasn't been a high priority at City Hall. 2. [countable usually singular] the building a city government uses as its offices. LDOCE • Protesters marched to City Hall. OALD. You will have to apply to City Hall for a building permit. CALD. 1 [count] : a city government's main building – usually singular: The mayor will be giving a speech on the steps of City Hall this afternoon. 2 [noncount] the government of a city: You can't fight city hall. [=the city government always wins]. MWALD Alexander Demidov)