girth vs girth strap

girth

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

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

• The length of the shortest cycle in a graph. 

• The part of an animal around which the girth fits. 

• A small horizontal brace or girder. 

• The distance measured around an object. 

• To bind as if with a girth or band. 

girth strap

• A cinch or a girth: a strap round the belly of an animal used to hold a saddle in place.