eponym

noun

A real or fictitious person's name that has given rise to the name of a particular item. / A word formed from a real or fictive person’s name.

The word 'sandwich' is an eponym, named after John Montagu, the 4th Earl of Sandwich.

意味（1）

A real or fictitious person's name that has given rise to the name of a particular item.

Romulus is the eponym of Rome.

意味（2）

A word formed from a real or fictive person’s name.

Rome is an eponym of Romulus.

意味（3）

(loosely, nonstandard, by extension) A word formed from a real or fictive place or thing.

“Tangerine” is an eponym of Tangier.