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barklouse

or bark louse

[bahrk-lous]
noun, plural bark·lice [bahrk-lahys] /ˈbɑrkˌlaɪs/.
  1. any of numerous insects of the order Psocoptera that live on the bark of trees and other plants.
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See also psocid.

Origin of barklouse

An Americanism dating back to 1835–45; bark2 + louse
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018