smock. 1  a loose, lightweight overgarment worn to protect the clothing while working. 2  to clothe in a smock. 3  to draw (a fabric) by needlework into a honeycomb pattern with diamond-shaped recesses.
The term lordosis refers to the normal inward lordotic curvature of the lumbar and cervical regions of the spine. Excessive curvature of the lower back is known as lumbar hyperlordosis, commonly called hollow back or saddle back (after a similar condition that affects some horses).
This type of spinal curve is known as a lordotic curve, or lordosis. This can be a bit confusing since the term lordosis may be used to describe an anatomical section of the spine or the excessive curve pathology. Spondylolisthesis occurs when one vertebra slips forward in relation to the ones above and below it.