any small bones, but specifically the auditory ossicles: the sequence of three tiny bones in the middle ear which convey noise vibrations from the tympanic membrane to the oval window of the inner ear. They're the malleus, which is connected to the tympanic membrane- the incus- and the stapes, whose footplate almost fills the oval window.
OSSICLES: "Many people think it's impossible to break their ear, but it's very possible to break the ossicles inside it."