Found 2 items, similar to Pill bug.
English → English (WordNet) Definition: pill bug pill bug n : small terrestrial isopod with a convex segmented body that can roll up into a ball
English → English (gcide) Definition: Pill bug Pill \Pill\, n. [F. pilute, L. pilula a pill, little ball, dim. of L. pila a ball. Cf. Piles.] 1. A medicine in the form of a little ball, or small round mass, to be swallowed whole. [1913 Webster] 2. Figuratively, something offensive or nauseous which must be accepted or endured. --Udall. [1913 Webster] Pill beetle (Zo["o]l.), any small beetle of the genus Byrrhus, having a rounded body, with the head concealed beneath the thorax. Pill bug (Zo["o]l.), any terrestrial isopod of the genus Armadillo, having the habit of rolling itself into a ball when disturbed. Called also pill wood louse. [1913 Webster]