Entry from British & World English dictionary
Definition of pill woodlouse in English:
A woodlouse with a thick cuticle, which is able to roll up into a ball when threatened. Also called pill bug.
- Genus Armadillidium, order Isopoda
- The common pill woodlouse has a flat grey, oval body and is able to roll into a ball when disturbed.
- The common pill woodlouse was the only one found in drier areas of our school grounds.
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