HUMPBACK

Definition

1. noun an abnormal backward curve to the vertebral column. — synonyms: kyphosis, hunchback
2. noun a person whose back is hunched because of abnormal curvature of the upper spine. — synonyms: hunchback, crookback
3. noun large whalebone whale with long flippers noted for arching or humping its back as it dives. — synonyms: humpback_whale, Megaptera_novaeangliae