buy-to-letnoun
also buy to let uk/ˌbaɪ.təˈlet//ˌbaɪ.təˈlet/UK[ U ] the activity of buying homes in order to rent them to other people rather than live in them yourself:
mortgage lenders specialising in buy-to-let
buy-to-let investors/landlords
the buy-to-let market
[ C ] a home bought in order to rent it to other people:
The couple recently bought their first buy-to-let.