nipplewort Syllabification: (nip·ple·wort)Pronunciation: /ˈnipəlˌwərt, -ˌwôrt/Definition of nipplewort noun a yellow-flowered plant of the daisy family, growing in woods and empty lots. Lapsana communis, family Compositae nipplewort in other Oxford dictionaries Definition of nipplewort in the British & World English dictionary