Humpback

[…] the Stone in my Fathers Body was so immense, that I’ve wonder’d it did not bunch up behind, and make him have a Hump-back, or at least overpoise him in walking, and drag him backward with its incredible weight.

[…] Tom’s more specific and kindly impressions gradually melted into the old background of suspicion and dislike toward him as a queer fellow, a humpback, and the son of a rogue.

The captain of the James Rodgers […] was an old hand at humpbacking […]