Synonyms for Spinous:

adj.

all (adjective)
spiny.
sharp (adjective)
acute, pointy, sagittal, thorny, keen, cutting, spiked, spear-like, bristly, sharp, pointed, spiny, spiky, razor-edged, jagged, needle-like, barbed, needle-point, prickly, Thistly.
thorny (adjective)
spiked, spiky, Thistly, barbed, prickly, spiny, bristly.

n.

spinous (noun)
acanthous, pointed, acanthoid.

Other synonyms:

Other relevant words:
acanthoid, acanthous.

Usage examples for spinous

  1. One, a cylinder of what appeared to be wood, covered thickly with spinous points, hung against the wall. – Popular Adventure Tales by Mayne Reid
  2. Through the skin it is often difficult to identify with certainty the individual spinous processes. – Manual of Surgery Volume Second: Extremities--Head--Neck. Sixth Edition. by Alexander Miles Alexis Thomson