[ noun ] any of various herbaceous plants of the genus Atriplex that thrive in deserts and salt marshes <noun.plant>
Orach \Or"ach\, Orache \Or"ache\, n. [F. arroche, corrupted fr. L. atriplex, Gr. ?. Cf. {Arrach}.] (Bot.) A genus ({Atriplex}) of herbs or low shrubs of the Goosefoot family, most of them with a mealy surface.
{Garden orache}, a plant ({Atriplex hortensis}), often used as a pot herb; -- also called {mountain spinach}.