girth
noun
[ ɡəːθ ]
• the measurement around the middle of something, especially a person's waist.
• "idle men of great girth"
• a band attached to a saddle and fastened around a horse's belly to keep the saddle in place.
girth
verb
• surround; encircle.
• "the four seas that girth Britain"
Origin:
Middle English (in girth (sense 2 of the noun)): from Old Norse gjǫrth .