Definition: orach

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Source: WordNet (r) 1.7 

orach
     n : any of various herbaceous plants of the genus Atriplex that
         thrive in deserts and salt marshes [syn: orache]

Source: Webster's Revised Unabridged Dictionary (1913) 

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.