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).
An abnormal degree of forward curvature of the lower part of the spine, often associated with abnormal backward curvature of the upper part (KYPHOSIS). Lordosis is an exaggeration of the normal forward curve and often causes the buttocks to appear unduly prominent.