RhymeZone: harwell definitions

Definitions of Harwell:

name: A surname (rare: 1 in 33333 families; popularity rank in the U.S.: #4177)

noun: A hamlet in Everton parish, Bassetlaw district, Nottinghamshire, England (OS grid ref SK6891).
noun: A village and civil parish in Vale of White Horse district, Oxfordshire, England (OS grid ref SU4989).
noun: (countable) A habitational surname from Old English.

(Definitions from Wiktionary)