Tac"a*ma*hac` (?), Tac`a*ma*ha"ca (?), n.
A bitter balsamic resin obtained from tropical American trees of the genus Elaphrium (E. tomentosum and E. Tacamahaca), and also from East Indian trees of the genus Calophyllum; also, the resinous exhudation of the balsam poplar.
Any tree yielding tacamahac resin, especially, in North America, the balsam poplar, or balm of Gilead (Populus balsamifera).
© Webster 1913.