The noun clench has 2 senses (no senses from tagged texts)
1. clinch, clench -- (a small slip noose made with seizing)
2. clasp, clench, clutch, clutches, grasp, grip, hold -- (the act of grasping; "he released his clasp on my arm"; "he has a strong grip for an old man"; "she kept a firm hold on the railing")
Overview of verb clench
The verb clench has 2 senses (first 2 from tagged texts)
1. (1) clench, clinch -- (hold in a tight grasp; "clench a steering wheel")
2. (1) clench -- (squeeze together tightly; "clench one's jaw")