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).
The word kyphosis is used to describe a C-shaped curve in the spine. A kyphosis curve has the opening of the C in the front of the body. This type of curve is the opposite of a lordotic curve in the spine. A lordotic curve has the opening facing towards the back. The normal spine has both types of curves, but in small amounts.