Lugworm \Lug"worm`\, n. [1st lug + worm.] (Zool.)
A large marine annelid ({Arenicola marina}) having a row of
tufted gills along each side of the back. It is found
burrowing in sandy beaches, both in America and Europe, and
is used for bait by European fishermen. Called also
{lobworm}, and {baitworm}.
[1913 Webster]