stapes

sta·pes

noun \ˈstā-(ˌ)pēz\

plural stapes or sta·pe·des \stə-ˈpē-ˌdēz\

Definition of STAPES

: the innermost of the chain of three ossicles in the middle ear of a mammal having the form of a stirrup, a base occupying the oval window of the tympanum, and a head connected with the incus—called also stirrup

Illustration of STAPES