Word Study
spinage
CIDE DICTIONARY
spinage, n. [OF. espinache, espinoche, F. épinard; cf. F. spinace, Sp. espinaca; all fr. Ar. isfānāj, isfināj, aspanākh, probably of Persian origin.].
A common pot herb (Spinacia oleracea ) belonging to the Goosefoot family. [1913 Webster]
" Various other pot herbs are locally called spinach." [1913 Webster]
For further exploring for "spinage" in Webster Dictionary Online