Definition of swayback
1
: an abnormally hollow condition or sagging of the back found especially in horses;
also
: a sagging back
2
: abnormally exaggerated forward curvature of the lumbar and cervical regions of the spine : lordosis 2
- Rarely is swayback a sign of anything serious. If you're in doubt, compare the posture of your child with that of other toddlers.
- —Parenting
