D defs.my
Entry 1 sense Webster, 1913

Eponymy

/ĕp-ôn'-ĭm-ēˌ/ · E·pon·y·my · IPA /ɛpˈɔnɪmˌiː/
01 n. The derivation of the name of a race, tribe, etc., from that of a fabulous hero, progenitor, etc.
  1. 1.
    The derivation of the name of a race, tribe, etc., from that of a fabulous hero, progenitor, etc.