GRAUNCH BRIT. Meaning of GRAUNCH BRIT. in English graunch Brit. [ grɔ:n(t)ʃ ]informal■ verb make a crunching or grinding noise. ■ noun a crunching or grinding noise.OriginC19 (orig. dialect): imitative. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004