'Betel nut' definitions:

Definition of 'betel nut'

From: WordNet
noun
Seed of betel palm; chewed with leaves of the betel pepper and lime as a digestive stimulant and narcotic in southeastern Asia [syn: betel nut, areca nut]

Definition of 'Betel nut'

From: GCIDE
  • Betel nut \Be"tel nut`\ The nutlike seed of the areca palm, chewed in the East with betel leaves (whence its name) and shell lime. [1913 Webster]