piripiriPronunciation: /ˈpɪrɪˌpɪri/ (also pirri-pirri burr)Definition of piripiri noun (plural piripiris) a New Zealand plant of the rose family, with prickly burrs. Genus Acaena, family Rosaceae: several species, in particular A. anserinifolia Origin: mid 19th century: from Maori