D defs.my
Entry 2 senses Webster, 1913

Scala

/skäl'-ə/ · Sca·la · IPA /ˈskɑlɑ/
01 n. A machine formerly employed for reducing dislocations of the humerus.
pl. Scalae ((#))
  1. 1.
    A machine formerly employed for reducing dislocations of the humerus.(Surg.)
  2. 2.
    A term applied to any one of the three canals of the cochlea.(Anat.)