1. (noun)swamp laurel, bog laurel, bog kalmia, Kalmia polifolia laurel of bogs of northwestern United States having small purple flowers and pale leaves that are glaucous beneath Synonyms: swamp laurel, bog kalmia, sweet bay, swamp bay, bog laurel
2. (noun)sweet bay, swamp bay, swamp laurel, Magnolia virginiana shrub or small tree having rather small fragrant white flowers; abundant in southeastern United States Synonyms: swamp laurel, bog kalmia, sweet bay, swamp bay, bog laurel