-ˈspərmə noun
Etymology: New Latin, from aspid- + -sperma
1. capitalized : a genus of tropical American trees or rarely shrubs (family Apocynaceae) having alternate leaves, small flowers, follicular fruits, and peltate compressed seeds with a flat papery wing — see paddlewood , quebracho
2. -s : the dried bark of the white quebracho used as a respiratory sedative in dyspnea and in asthma