clench /klɛnt͡ʃ/noun 4verb 3forms 4 noun4 •A tight grip. •A local chapter of the Church of the SubGenius parody religion.And perhaps most innovative of all, Drummond and Stang pushed for a policy of clench autonomy […] — 1989 •A seal that is applied to formed thin-wall bushings. •(no longer used) A pun.Here one poor word an hundred clenches makes — 1728 verb3 •To close tightly.He clenched his fist in anger. •To grip or hold fast.I clenched the rope in my teeth. •(old-fashioned) Dated form of clinch (“make certain, finalize”).Captain Treverton, it is hardly necessary to say, was not long in clenching the bargain on his side. The estate changed hands; […] — 1875 formsclenched · clencht · clenching · clenches