| a vine, Dioscorea bulbifera, of southeastern Asia, having tubers weighing several pounds and growing in the leaf axils. |
| air potato or air-po·ta·to (âr'pə-tā'tō) n. A tropical Old World yam (Dioscorea bulbifera) having axillary potatolike tubers, some of which are edible after cooking. It is a weed in the tropics and Florida. Also called aerial yam, potato yam. |
| potato yam n. See air potato. |