noun
also co·lum·ba or co·lom·ba kəˈləmbə ; or co·lom·bo or co·lum·bo or ca·lom·bo kəˈləm(ˌ)bō
( -s )
Etymology: perhaps of African origin, akin to Hausa ka 1 lu 1 mbo 2 , a small tree
: the root of an African plant ( Jatrorrhiza palmata ) of the family Menispermaceae that contains the bitter principle columbin and is used as a tonic