The Collaborative International Dictionary of English v.0.48:

Crochet \Cro*chet"\ (kr?-sh?"), n. [F. crochet small hook. See
   Croche.]
   A kind of knitting done by means of a hooked needle, with
   worsted, silk, or cotton; crochet work. Commonly used
   adjectively.
   [1913 Webster]

   Crochet hook, Crochet needle, a small hook, or a hooked
      needle (often of bone), used in crochet work.
      [1913 Webster]

WordNet (r) 3.0 (2006):

crochet hook
    n 1: a needle with a hook on the end; used in crocheting [syn:
         crochet needle, crochet hook]