Other forms: humpbacks
A humpback is a hunched back, or the whale that has one. A humpback whale, a humpback bridge, the humpback breached.
The whale is named for the shape it makes when diving, and its song travels for miles and changes from year to year across a whole population. Used of a person, humpback and hunchback are both dated and hurtful, and the condition is kyphosis.
1nounhumpbackA hunched back, or the whale that has one.
“We watched a humpback leap out of the sea and crash back down.”
humpback is a shape, or a whale.
Hump plus back. The whale took the name from the arch of its back as it dives.
From hump + back.
Etymology from Wiktionary, CC BY-SA