2 definitions
for Sea snail
From The Collaborative International Dictionary of English v.0.48 :
Sea snail \Sea" snail`\ (Zool.)
(a) A small fish of the genus Liparis, having a ventral
sucker. It lives among stones and seaweeds.
(b) Any small creeping marine gastropod, as the species of
Littorina, Natica, etc.
[1913 Webster]
From WordNet (r) 2.0 :
sea snail
n : small tadpole-shaped cold-water fishes with pelvic fins
forming a sucker; related to lumpfish [syn: snailfish,
seasnail, Liparis liparis]