lurg

from The Century Dictionary.

• noun An errant marine worm, Nephthys cæca, found on the coasts of Great Britain: also called white-rag worm. It is about 8 inches long, of a pearly-whitish color, and lives in the sand.

from the GNU version of the Collaborative International Dictionary of English.

• noun (Zoöl.) A large marine annelid (Nephthys cæca), inhabiting the sandy shores of Europe and America. It is whitish, with a pearly luster, and grows to the length of eight or ten inches.