Auditory ossicles are the three bones in the middle ear, which are articulated to form a chain for the transmission of sound from the external ear to the internal ear.
Malleus is the first auditory ossicle. It looks like a hammer.
Incus is the 2nd auditory ossicle. It appears like an anvil.
Stapes is the 3rd auditory ossicle and the smallest human bone. It appears like a stirrup.
Hence, the hammer-shaped ear bone of the middle ear is the malleus.