Noun swamp laurel has 2 senses

• swamp laurel(n = noun.plant) bog kalmia, bog laurel, kalmia polifolia - laurel of bogs of northwestern United States having small purple flowers and pale leaves that are glaucous beneath; Array
is a kind of kalmia

• swamp laurel(n = noun.plant) magnolia virginiana, swamp bay, sweet bay - shrub or small tree having rather small fragrant white flowers; abundant in southeastern United States; Array
is a kind of magnolia