Source : Webster's Revised Unabridged Dictionary (1913)

Cottonseed oil \Cottonseed oil\
   A fixed, semidrying oil extracted from cottonseed. It is pale
   yellow when pure (sp. gr., .92-.93). and is extensively used
   in soap making, in cookery, and as an adulterant of other
   oils.

Source : WordNet®

cottonseed oil
     n : edible oil pressed from cottonseeds