'Bigamist' definitions:

Definition of 'bigamist'

From: WordNet
noun
Someone who marries one person while already legally married to another

Definition of 'Bigamist'

From: GCIDE
  • Bigamist \Big"a*mist\, n. [Cf. Digamist.] One who is guilty of bigamy. --Ayliffe. [1913 Webster]