Answer: eponym

AnswerCrossword Clue
EPONYMWhat Romulus was to Rome
EPONYMHellen, to Hellenes.
EPONYMName giver
EPONYMPerson for whom a nation or city is named
EPONYMName giver of a sort
EPONYMColumbus, to Colombia, e.g.
EPONYMPenn, to Pennsylvania
EPONYMName source
EPONYMGabriel Fahrenheit or Anders Celsius
EPONYMRob Roy or Shirley Temple
EPONYMThe Earl of Sandwich, for one
EPONYMLouis Braille or Louis Chevrolet
EPONYMEarl of Sandwich, e.g.
EPONYMPerson for whom something is named
EPONYMWhat Penn is to Pennsylvania.
EPONYMShirley Temple or Tom Collins
EPONYM"Mae West" for "life jacket"
EPONYMName derived from a person
EPONYMWord derived from a person's name
EPONYMRomulus, for one
EPONYMMonroe for Monrovia
EPONYMTesla or Volta, e.g.
EPONYMJames Parkinson or Alois Alzheimer
eponyma person, real or imaginary, from whom something takes or is said to take its name.
eponymperson, real or imaginary, from whom something, as a tribe, nation, or place, takes or is said to take its name
eponymany ancient official whose name was used to designate his year of office
eponyma person after whom something is named
eponymword based on or derived from a person's name
EPONYMSam Houston, to Houston
EPONYMName identified with a place
EPONYMRomulus to Rome, e.g.
EPONYMName-giver
EPONYMWashington or Lincoln, many times over
EPONYMPenn, vis- -vis Pennsylvania
EPONYMRomulus, vis- -vis Rome
EPONYMAmerigo Vespucci, vis- -vis America
EPONYMKarl Benz or Henry Ford
EPONYMEuclid, vis- -vis geometry
EPONYMRudolf Diesel, re the diesel
EPONYMNamed derived from a person