FURNITURE [C, U] › a piece of furniture that you sleep on: a single/double bed What time did you go to bed last night? She was lying in bed when I arrived. He had only just got out of bed. Have you made the bed (= tidied the bed after you have slept in it)? GROUND [C] › a piece of ground that is used for growing plants, especially flowers: a flower bed BOTTOM [C] › the ground at the bottom of the sea, a river, etc: the sea bed → See also bunk beds