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pessulus

noun
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pes·​su·​lus | \ -ləs \
plural pessuli\ -​ˌlī \

Definition of pessulus

: 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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History and Etymology for pessulus

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

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“Pessulus.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/pessulus. Accessed 20 January 2020.

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