The Collaborative International Dictionary of English v.0.48:

Loligo \Lo*li"go\, n. [L., cuttle fish.] (Zool.)
   A genus of cephalopods, including numerous species of squids,
   common on the coasts of America and Europe. They are much
   used for fish bait.
   [1913 Webster]

WordNet (r) 3.0 (2006):

loligo
    n 1: somewhat flattened cylindrical squid