Search Result for "hollow-back": 
Wordnet 3.0

NOUN (1)

1. an abnormal inward (forward) curvature of the vertebral column;
[syn: lordosis, hollow-back]



WordNet (r) 3.0 (2006):

hollow-back
    n 1: an abnormal inward (forward) curvature of the vertebral
         column [syn: lordosis, hollow-back]