Meaning of “building” - Learner’s Dictionary

building

noun uk us /ˈbɪldɪŋ/
STRUCTURE [ C ]

A2 a structure with walls and a roof, such as a house, school, etc:

an office building
ACTIVITY [ U ]

the activity of putting together materials and parts to make structures:

building materials
→ See also apartment building

(Definition of “building” from the Cambridge Learner’s Dictionary © Cambridge University Press)