n. (Bot.) A tuberous or semi-tuberous South African begonia (Begonia dregei) having shallowly lobed ovate leaves and small white flowers. Syn. -- grape-leaf begonia. [ WordNet 1.5 ]
(n) tuberous or semi-tuberous South African begonia having shallowly lobed ovate leaves and small white flowers, Syn. maple-leaf begonia, Begonia dregei