Definition of ours pronoun from the Oxford Advanced Learner's Dictionary
ours
pronoun
ɑːz ɑːrz
ˈaʊəz ˈaʊərz
1the one or ones that belong to usTheir house is very similar to ours, but ours is bigger.No, those are Ellie's kids. Ours are upstairs.He's a friend of ours.2(British English, informal) our homeDo you fancy coming to ours for Sunday dinner?