Spin"ach, Spin"age (?), n. [OF. espinache, espinoche, F. 'epinard; cf. F. spinace, Sp. espinaca; all fr. Ar. isfanaj, isfinaj, aspanakh, probably of Persian origin.] Bot.
A common pot herb (Spinacia oleracea) belonging to the Goosefoot family.
Mountain spinach. See Garden orache, under Orache. -- New Zealand spinach Bot., a coarse herb (Tetragonia expansa), a poor substitute for spinach.
⇒ Various other pot herbs are locally called spinach.
© Webster 1913.