1. Small terrestrial crustaceans with oval, segmented bodies that can roll into a tight ball when threatened; also called roly-polies or woodlice.
Usage: Plural form of pillbug; Common in gardens and damp areas; Informal/colloquial term

Examples

• The children found pillbugs under the garden rocks.
• Pillbugs curl up into balls when they feel threatened.
• We observed pillbugs in the compost pile during science class.
• The damp basement attracted several pillbugs.
• Pillbugs are actually crustaceans, not insects.
• My daughter collected pillbugs for her biology project.