The Open Dictionary

eponym

noun

UK/ˈep.ə.nɪm/
US/ˈep.ə.nɪm/

Definitions of eponym noun

  1. Countable

    A person whose name is used to name something else, such as a place, thing, or idea.

    • The 'Cheshire Cat' is an eponym from Lewis Carroll's Alice's Adventures in Wonderland.

    • Alzheimer's disease is an eponym, named after the physician who first described it, Alois Alzheimer.

    • The sandwich is an eponym, named after the Earl of Sandwich, who supposedly liked to eat meat between two slices of bread.