资料来源 : pyDict

凹背的,鞍形的,有鞍部的

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Saddle-backed \Sad"dle-backed`\, a.
   1. Having the outline of the upper part concave like the seat
      of a saddle.

   2. Having a low back and high neck, as a horse.