[+house] cave f
→ They built a workshop in the basement.
[room, club] en sous-sol → The door to Helen's basement room was ajar.
bargain basement , bargain-basement
[prices, rates] de bazar
→ He offered high quality electrical goods at bargain basement prices
basement flat (British)
n appartement m en sous-sol
→ She had a tiny basement flat near Sloane Square