Entry 1 sense Webster, 1913 dagga · IPA /ˈdaɡə/ 01 n. a relatively nontoxic South African herb (Leonotis leonurus) smoked like tobacco. 1. a relatively nontoxic South African herb (Leonotis leonurus) smoked like tobacco. Syn. Cape dagga, red dagga, wilde dagga, Leonotis leonurus.