sofa bed
From Longman Dictionary of Contemporary EnglishRelated topics: Furnituresofa bedˈsofa bed noun [countable] DHFa sofa that has a bed inside that can be folded outExamples from the Corpussofa bed• The third or fourth bed may be a sofa bed in some cases.• People who live near a corner where another so-and-so has abandoned a grotty sofa bed.• She helped him to his sofa bed in the living room, and he still did not wake up.