D defs.my
Entry 1 sense Webster, 1913

Gnathidium

· Gna·thid·i·um · IPA
01 n. The ramus of the lower jaw of a bird as far as it is naked; -- commonly used in the plural.
pl. Gnathidia ((#))
  1. 1.
    The ramus of the lower jaw of a bird as far as it is naked; -- commonly used in the plural.(Zool.)