spinacia oleracea

from WordNet (r) 3.0 (2006)

Spinacia oleracea
    n 1: southwestern Asian plant widely cultivated for its
         succulent edible dark green leaves [syn: {spinach},
         {spinach plant}, {prickly-seeded spinach}, {Spinacia
         oleracea}]

from The Collaborative International Dictionary of English v.0.48

Spinach \Spin"ach\, Spinage \Spin"age\, n. [OF. espinache,
   espinoche, F. ['e]pinard; cf. F. spinace, Sp. espinaca; all
   fr. Ar. isf[=a]n[=a]j, isfin[=a]j, aspan[=a]kh, probably of
   Persian origin.] (Bot.)
   A common pot herb ({Spinacia oleracea}) belonging to the
   Goosefoot family.
   [1913 Webster]

   {Mountain spinach}. See {Garden orache}, under {Orache}.

   {New Zealand spinach} (Bot.), a coarse herb ({Tetragonia
      expansa}), a poor substitute for spinach.
      [1913 Webster]

   Note: Various other pot herbs are locally called spinach.
         [1913 Webster]