So"fa (?), n.; pl. Sofas (#). [Ar. soffah, from saffa to dispose in order: cf. F. sofa, It.sofa.]
A long seat, usually with a cushioned bottom, back, and ends; -- much used as a comfortable piece of furniture.
Let fall the curtains, wheel the sofa round.
Sofa bed, a sofa so contrived that it may be extended to form a bed; -- called also sofa bedstead.
© Webster 1913.