Pessulus

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Pessulus \Pes"su*lus\, n.; pl. {Pessuli}. [L., a bolt.] (Anat.)
     A delicate bar of cartilage connecting the dorsal and ventral
     extremities of the first pair of bronchial cartilages in the
     syrinx of birds.
     [1913 Webster]