subspinous

from The Collaborative International Dictionary of English v.0.48

Subspinous \Sub*spi"nous\, a.
   (a) (Anat.) Subvertebral.
   (b) (Med.) Situated beneath a spinous process, as that of the
       scapula; as, subspinous dislocation of the humerus.
       [1913 Webster]