||Spi"na bif"i*da (?). (Med.) [L., cleft spine.] A congenital
||malformation in which the spinal column is cleft at its lower
||portion, and the membranes of the spinal cord project as an elastic
||swelling from the gap thus formed.
Spi*na"ceous (?), a. (Bot.) Of, pertaining to, or resembling, the plant
spinach, or the family of plants to which it belongs.
{ Spin"ach, Spin"age } (?), n. [OF. espinache, espinoche, F. épinard;
cf. F. spinace, Sp. espinaca; all fr. Ar. isfnj, isfinj, aspankh,
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.
Spi"nal (?), a. [L. spinalis, fr. spina the spine: cf. F. spinal. See
Spine.] 1. (Anat.) Of, pertaining to, or in the region of, the
backbone, or vertebral column; rachidian; vertebral.