from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun Any of various worms of the phylum Acanthocephala that live parasitically in the intestines of vertebrates and are characterized by a cylindrical, retractile proboscis that bears many rows of hooked spines.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun any of various worms living parasitically in intestines of vertebrates having a retractile proboscis covered with many hooked spines
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