noun
- a small bone or bony structure in the ear of a vertebrate, especially a fish; an otolith.
Usage: technical; zoology
Examples
- The earstone of the fish helps it maintain balance and detect sound vibrations.
- Scientists examined the earstone to determine the age of the specimen.
- Earsones are composed of calcium carbonate and are found in the inner ear.
- The structure of the earstone varies among different fish species.