Ava-ava, also known as Arva, Kava, or Yava (Micropiper methysticum), is a plant of the natural order Piperacese (the pepper family), so called by the inhabitants of Polynesia, who make an intoxicating drink out of it. Its leaves are chewed with betel in South-eastern Asia.
Found on http://www.probertencyclopaedia.com/browse/BAA.HTM
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