D defs.my
Entry 1 sense Webster, 1913

Stapes

/(stā"pēz)/ · Sta·pes · IPA /ˈsteɪ.piːz/
01 n. The innermost of the ossicles of the ear; the stirrup, or stirrup bone; -- so called from its form. See Illust. of Ear.
  1. 1.
    The innermost of the ossicles of the ear; the stirrup, or stirrup bone; -- so called from its form. See Illust. of Ear.(Anat.) See: Ear