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booklouse

American  
[book-lous] / ˈbʊkˌlaʊs /
Or book louse

noun

PLURAL

booklice
  1. any of numerous minute, wingless insects of the order Psocoptera, often living among books or papers.


booklouse British  
/ ˈbʊkˌlaʊs /

noun

  1. any small insect of the order Psocoptera , esp Trogium pulsatorium ( common booklouse ), a wingless species that feeds on bookbinding paste, etc

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of booklouse

First recorded in 1865–70; book + louse