stirrup

noun

1. support consisting of metal loops into which rider's feet go

   noun.artifact

   Synonyms stirrup iron

   Source: WordNet 3.0

2. the stirrup-shaped ossicle that transmits sound from the incus to the cochlea

   noun.body

   Synonyms stapes

   Source: WordNet 3.0

3. A kind of ring, or bent piece of metal, wood, leather, or the like, horizontal in one part for receiving the foot of a rider, and attached by a strap to the saddle, -- used to assist a person in mounting a horse, and to enable him to sit steadily in riding, as well as to relieve him by supporting a part of the weight of the body.

   noun

   Source: webster1913