stapes

jalustinluu, jalustin puhekieltä A small stirrup-shaped bone of the middle ear.
2010, Elaine N. Marieb & Katja Hoehn, Human Anatomy & Physiology, 8th edition, page 576

The tympanic cavity is spanned by the three smallest bones in the body: the auditory ossicles(..) These bones, named for their shape, are the malleus (malʹe-us; "hammer"); the incus (ingʹkus; "anvil"); and the stapes (staʹpēz; "stirrup"). The "handle" of the malleus is secured to the eardrum, and the base of the stapes fits into the oval window.

(..)quidam duos stapedes et tres cingulas una cum sella annumerant, alii his singulis pretium legitimum assignant, id est, stapedibus auratis

: (..)some two stirrups and three belts with a chair are paid out, all assigned a single worth, that is, golden stirrups