girth 
/ˈgɚθ/ noun
plural girths /ˈgɚθ/ noun 1 : the size of someone or something measured around the middle [noncount] ▪ The tree is about two meters in girth. ▪ a person of large girth [count] ▪ a girth of about two meters 2 [count] : a band or strap placed around the body of an animal (such as a horse) to hold something (such as a saddle) on its back
