[in.cus] n, pl in.cu.des [NL, fr. L, anvil, fr. incudere] (1669): the middle bone of a chain of three small bones in the ear of a mammal--called also anvil--see ear illustration
INCUS
Meaning of INCUS in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012