CLENCH Meaning of CLENCH in English v. & n.v.tr. 1 close (the teeth or fingers) tightly. 2 grasp firmly. 3 = CLINCH v. 4. n. 1 a clenching action. 2 a clenched state. [ OE f. Gmc: cf. CLING ] Concise Oxford English dictionary. Краткий оксфордский словарь английского языка. 2012