lumbago Meaning, Definition & Usage

  1. noun backache affecting the lumbar region or lower back; can be caused by muscle strain or arthritis or vascular insufficiency or a ruptured intervertebral disc
    lumbar pain.

WordNet

Lum*ba"go noun
Etymology
L., fr. lumbus loin. See Lumbar.
Definitions
  1. (Med.) A rheumatic pain in the loins and the small of the back.

Webster 1913