mountain laurel

noun
1.
a North American laurel, Kalmia latifolia, having terminal clusters of rose to white flowers: the state flower of Connecticut and Pennsylvania.
Also called calico bush.
Origin
1750-60, Americanism
British Dictionary definitions for mountain laurel

mountain laurel

noun
1.
any of various ericaceous shrubs or trees of the genus Kalmia, esp K. latifolia of E North America, which has leathery poisonous leaves and clusters of pink or white flowers Also called calico bush