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]