clinching noun 3adjective 1forms 3 noun3 •A making certain or finalizing. •A clinch; a passionate embrace.Though there are no kissings and clinchings, […] — 1937 •(historical) The distortion of computer tape by wrinkling.This “clinching” can distort the tape by causing a series of creases or folds in the surface and may produce read errors. — 1985 adjective1 •That settles something (such as an argument) definitely and conclusively.‘Yes,’ said Dick, with such a clinching period at the end that it seemed he was never going to add another word. — 1872 formsclinchings · more clinching · most clinching