(genus Chaetopterus), any of several species of segmented worms of the class Polychaeta (phylum Annelida), especially C. variopedatus of the Atlantic and Pacific oceans. They live on the sea bottom in U-shaped tubes that are lined with parchmentlike material. Parchment worms grow to a length of about 25 cm (10 inches).
PARCHMENT WORM
Meaning of PARCHMENT WORM in English
Britannica English vocabulary. Английский словарь Британика. 2012