n.1.A kind of snuff prepared by the natives of Venezuela from the roasted seeds of a leguminous tree (Piptadenia peregrina), thence called niopo tree.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
(1.) In 1916, Safford provided evidence that snuffs being recognized variously by the terms yopo, niopo, yupa, yupa, wilca and cohoba were all derived from the seeds of the same leguminous tree, Anandenantheraperegrina (Safford 1916).