pessulus

noun

pes·​su·​lus

-ləs

plural pessuli

-ˌlī

: a bony or cartilaginous bar crossing the lower end of the windpipe of a bird dorsoventrally at its division into bronchi

Word History

Etymology

Latin, bolt, modification of Greek passalos peg, stake; akin to Greek pēgnynai to fix, fasten together

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