buildingPronunciation: /ˈbɪldɪŋ/Translate building | into French | into German | into Italian | into Spanish Definition of building noun 1a structure with a roof and walls, such as a house or factory. 2 [mass noun] the action or trade of constructing something:the building of motorways [as modifier]:building materials the creation or development of something over a period of time:the building of democracy in Guatemalabuilding in other Oxford dictionaries Definition of building in the US English dictionary