n. A large marine annelid worm of the species Arenicola marina, whose coiled castings can often be seen on beaches at low tide.
the GNU version of the Collaborative International Dictionary of English
n. 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.
The Century Dictionary and Cyclopedia
n. An annelid of the family Arenicolidæ, inhabiting the sea-shore.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. marine worms having a row of tufted gills along each side of the back; often used for fishing bait
Word Usage
"The lugworm slithered across the face in the sand, then burrowed deep once more."