1. A small terrestrial crustacean with a rounded, segmented body that can roll into a tight ball when threatened.
Usage: Also called a roly-poly or woodlouse in some regions.; Common in gardens and damp areas.

Examples

• The pillbug curled into a ball when I touched it.
• We found several pillbugs under the garden rocks.
• Children often call pillbugs roly-polies because of how they roll up.
• Pillbugs prefer damp environments like mulch and leaf litter.
• The pillbug is actually a crustacean, not an insect.