hunch
vt.
5< ?6 to draw (one‘s body, etc.) up so as to form a hump; arch into a hump
vi.
1 to move forward jerkily; push; shove
2 to sit or stand with the back arched
n.
1 a hump
2 a chunk; lump; hunk
>3 a guess or feeling not based on known facts; premonition or suspicion: from the superstition that it brings good luck to touch a hunchback

I never before heard the origin of "hunch" meaning "a guess".
Most famous hunchback in literature, Quasimodo, the hunchback of Notre Dame. I don't
recall plot ever involving anybody's touching him for good luck.