Noah Webster
Girth
GIRTH, noun The band or strap by which a saddle or any burden on a horse's back is made fast, by passing under his belly.
1. A circular bandage.
2. The compass measured by a firth or inclosing bandage.
He's a lusty, jolly fellow, that lives well, at least three yards in the girth
GIRTH, verb transitive To bind with a girth