The Collaborative International Dictionary of English v.0.48:

cochin \cochin\ n. [a shortened form of cochin-china fowl.]
   an Asian breed of large fowl with dense plumage and feathered
   legs.
   [WordNet 1.5]

WordNet (r) 3.0 (2006):

cochin
    n 1: Asian breed of large fowl with dense plumage and feathered
         legs [syn: cochin, cochin china]