ˈiŋkəs, -ˌküs noun
( plural in·cu·des iŋˈk(y)ü(ˌ)dēz, ˈiŋkyəˌdēz)
Etymology: New Latin, from Latin, anvil, from incudere to incuse, stamp, strike
1.
a. : the middle of a chain of three small bones in the ear of mammals — called also anvil ; see ear illustration
b. : the median Y-shaped structure in the mastax of a rotifer upon which the mallei work
2. : an anvil-shaped top of a thundercloud