wood louse

from The American Heritage® Dictionary of the English Language, 4th Edition

• n. See pill bug.
• n. See sow bug.

from the GNU version of the Collaborative International Dictionary of English

• n. Any one of several species of small, wingless, pseudoneuropterous insects of the family Psocidæ, which live in the crevices of walls and among old books and papers. Some of the species are called also book lice, and deathticks, or deathwatches.

from The Century Dictionary and Cyclopedia

• n. Any terrestrial isopod of the family Oniscidæ. The common wood-louse of England is a species of Oniscus. Also called hog-louse, sow-bug, slater, etc. See cuts under Isopoda and Oniscus.
• n. A termite, or white ant, as Termes flavipes; any member of the Termitidæ. See cut under Termes.
• n. Any one of the small whitish species of the pseudoneuropterous family Psocidæ, found in the woodwork of houses; the death-watch; a book-louse. See book-louse, Psocidæ, and cut under death-watch.
• n. Same as wood-louse-milleped.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• n. any of various small terrestrial isopods having a flat elliptical segmented body; found in damp habitats