Oxford Dictionary English buy-to-let adjectiveadjective BrE BrE//ˌbaɪ tə ˈlet// ; NAmE NAmE//ˌbaɪ tə ˈlet// [only before noun] (British English) Add to my wordlistjump to other resultsdescribing or connected with a house or flat/apartment that somebody buys in order to rent it out to somebody else, not to live in it themselves He owns several buy-to-let flats in the city. buy-to-let properties/investors/mortgagesCheck pronunciation: buy-to-let oxfordlearnersdictionaries.com