[1] : The Collaborative International Dictionary of English v.0.48

sofa \so"fa\, n.; pl. sofas. ar. soffah, from saffa to
   dispose in order: cf. f. sofa, it. sof`a.
   a long seat, usually with a cushioned bottom, back, and ends;
   -- much used as a comfortable piece of furniture.
   1913 webster

         let fall the curtains, wheel the sofa round. --cowper.
   1913 webster

   sofa bed, a sofa so contrived that it may be extended to
      form a bed; -- called also sofa bedstead.
      1913 webster
see also:
sofas sofa bed sofa bedstead 

[2] : WordNet (r) 2.0

sofa
     n : an upholstered seat for more than one person syn: couch,
         lounge
see also:
couch lounge 

[3] : Moby Thesaurus II by Grady Ward, 1.0

24 moby thesaurus words for "sofa":
   bed, bedstead, bunk, chesterfield, couch, davenport, day bed,
   divan, doss, gurney, kip, litter, lounge, love seat, ottoman,
   settee, settle, spoonholder, squab, stretcher, studio couch,
   tete-a-tete, the hay, the sack

Sofa >> S Words
Sofa, definition of term: Sofa
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