Source : Webster's Revised Unabridged Dictionary (1913)

Arecoline \A*re"co*line\, n. Also -lin \-lin\ . [From NL. Areca,
   a genus of palms bearing betel nut.]
   An oily liquid substance, {C8H13O2N}, the chief alkaloid of
   the betel nut, to which the latter owes its anthelmintic
   action.