Search Result for "eponym": 
Wordnet 3.0

NOUN (2)

1. the person for whom something is named;
- Example: "Constantine I is the eponym for Constantinople"

2. the name derived from a person (real or imaginary);
- Example: "Down's syndrome is an eponym for the English physician John Down"


The Collaborative International Dictionary of English v.0.48:

Eponym \Ep"o*nym\, Eponyme \Ep"o*nyme\, n. [Cf. F. ['e]ponyme. See Eponymous.] 1. The hypothetical individual who is assumed as the person from whom any race, city, etc., took its name; as, Hellen is an eponym of the Hellenes. [1913 Webster] 2. A name, as of a people, country, and the like, derived from that of an individual. [1913 Webster]
WordNet (r) 3.0 (2006):

eponym n 1: the person for whom something is named; "Constantine I is the eponym for Constantinople" 2: the name derived from a person (real or imaginary); "Down's syndrome is an eponym for the English physician John Down"