spinous

Resembling a spine or thorn.

Having spines or similar projections; spiny.

In zoology and anatomy:

Having spines; spiny; spinigerous or spiniferous.

Shaped like a spine; spiniform; having the character of a spine; sharp or pointed: as, a spinous process of bone. See spinose.

In botany, same as spinose.

Spinose; thorny.

Having the form of a spine or thorn; spinelike.

the dorsal process of the neural arch of a vertebra; a neurapophysis.

Having many spines.