The Collaborative International Dictionary of English v.0.48:
carissa \carissa\ n. a shrub of the genus Carissa having fragrant white flowers and plumlike red to purple-black fruits. [WordNet 1.5]WordNet (r) 3.0 (2006):
carissa n 1: a shrub of the genus Carissa having fragrant white flowers and plumlike red to purple-black fruits