: any of various grasses native to salt meadows or other markedly alkaline habitats: as
a. : a rigid erect No. American dioecious perennial grass (Distichlis spicata); broadly : any grass of the genus Distichlis
b. : any of several spartinas; especially : a perennial rhizomatous grass (Spartina patens) of wet brackish areas of eastern No. America
c. : feather grass 2
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any of several grasses, as Distichlis spicata, that grow in salt marshes or meadows or in alkali soil.
[1695-1705]
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salt grass,
any one of various grasses that grow in land having large salt or alkali deposits. Some kinds are used for fodder and hay.
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(also saltgrass) n. grass growing in salt marshes or in alkaline regions, esp. Distichlis spicata (family Gramineae)
Useful english dictionary. 2012.