book louse
noun
: any of various tiny usually wingless insects (order Psocoptera and especially genus Liposcelis) that feed on organic matter and especially mold, usually inhabit damp areas, and are often found in stored papers, books, and grains
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“Book louse.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/book%20louse. Accessed 22 Dec. 2024.
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