girth

A band passed under the belly of an animal, which holds a saddle or a harness saddle in place.

He was standing on the offside of his horse, holding up the flap of his saddle, with the surcingle loosened, and was pointing to the girths. Close to their attachment to the saddle they had been almost cut through with a knife.

The part of an animal around which the girth fits.

One's waistline circumference, most often a large one.

He's a lusty, jolly fellow, that lives well, at least three yards in the girth.

A small horizontal brace or girder.

The distance measured around an object; the circumference.

To bind as if with a girth or band.