girth /ɡəːθ /

▸ noun 1 [mass noun] the measurement around the middle of something, especially a person’s waist: idle men of great girth an ivy-clad tree of immense girth [count noun] a pike with a girth of 24 inches.

▪ a person’s waist or stomach, especially when large: he tied the knotted towels around his girth. 2 a band attached to a saddle and fastened around a horse’s belly to keep the saddle in place.

▸ verb [with object] archaic surround; encircle: the four seas that girth Britain. – ORIGIN Middle English (in girth (sense 2 of the noun)): from Old Norse gjǫrth.

infidel /ˈɪnfɪd(ɛ)l / derogatory mainly archaic

▸ noun a person who has no religion or whose religion is not that of the majority: a crusade against infidels and heretics (the infidel as plural noun) they wanted to secure the Holy Places from the infidel.

▸ adjective adhering to a religion other than that of the majority: the infidel foe. – ORIGIN late 15th century: from French infidèle or Latin infidelis, from in- ‘not’ + fidelis ‘faithful’ (from fides ‘faith’, related to fidere ‘to trust’). The word originally denoted a person of a religion other than one’s own, specifically a Muslim (to a Christian), a Christian (to a Muslim), or a Gentile (to a Jew).