Real Dictionary

tamarisk
countable noun: A tamarisk is a bush or small tree which grows mainly around the Mediterranean and in Asia, and has pink or white flowers.

tamarisk in American English
any of a genus (Tamarix) of small trees or shrubs of the tamarisk family with slender branches and feathery flower clusters, common near salt water and often grown for a windbreak
designating a family (Tamaricaceae, order Violales) of small, dicotyledonous shrubs and trees
noun: any Old World tropical plant of the genus Tamarix, esp. T. gallica, an ornamental Mediterranean shrub or small tree having slender, feathery branches

tamarisk in British English
noun: any of various ornamental trees and shrubs of the genus Tamarix, of the Mediterranean region and S and SE Asia, having scalelike leaves, slender branches, and feathery clusters of pink or whitish flowers: family Tamaricaceae