A broad wheal from an old scar ran right across it from eye to chin, and by its contraction had turned up one side of the upper lip, so that three teeth were exposed in a perpetual snarl.
A shock of orange hair, a pale face disfigured by a horrible scar, which, by its contraction, has turned up the outer edge of his upper lip, a bulldog chin, and a pair of very penetrating dark eyes, which present a singular contrast to the colour of his hair, all mark him out from amid the common crowd of mendicants and so, too, does his wit, for he is ever ready with a reply to any piece of chaff which may be thrown at him by the passers-by.
There are no more uses of "contract" identified with this meaning in the book.
Show samples from other sources
When it is cold, the bridge contracts and the joints are further apart.