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pessulus
noun
pes·su·lus
\-ləs\
Definition of pessulus
pessuli
\-ˌlī\: a bony or cartilaginous bar crossing the lower end of the windpipe of a bird dorsoventrally at its division into bronchi
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Origin and Etymology of pessulus
Latin, bolt, modification of Greek passalos peg, stake; akin to Greek pēgnynai to fix, fasten together
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