'Briton' definitions:

Definition of 'Briton'

adjective

Characteristic of or associated with the Britons; "the Briton inhabitants of England"

noun

A native or inhabitant of Great Britain [syn: Britisher, Briton, Brit]

noun

An inhabitant of southern Britain prior to the Anglo-Saxon invasions

From: GCIDE

Briton \Brit"on\, a. [AS. bryten Britain.] British. [Obs.] --Spenser. -- n. A native of Great Britain. [1913 Webster]