D defs.my
Entry 1 sense Webster, 1913

Archæopteryx

· Ar·chæ·op·te·ryx · IPA
01 n. A fossil bird, of the Jurassic period, remarkable for having a long tapering tail of many vertebræ with feathers along each side, and jaws …
  1. 1.
    A fossil bird, of the Jurassic period, remarkable for having a long tapering tail of many vertebræ with feathers along each side, and jaws armed with teeth, with other reptilian characteristics.(Paleon.)