Definition of passalus
1 capitalized : the type genus of the family Passalidae
2 plural -es : any beetle of Passalus or a related genus; especially : a flat shiny black gregarious bess-bug (Popilius disjunctus) of the southern U.S. —called also horned passalus
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Origin and Etymology of passalus
New Latin, from Greek passalos peg; akin to Greek pēssein to fix, fasten, pēgnynai to fix, fasten
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