Osmaterium

1 definition found

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

  Osmaterium \Os`ma*te"ri*um\, n.; pl. {Osmateria}. [NL., fr. Gr.
     ? smell.] (Zool.)
     One of a pair of scent organs which the larvae of certain
     butterflies emit from the first body segment, either above or
     below.
     [1913 Webster]