clench

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clench

a device that grasps or grips, such as a clamp

clinch, clench

To secure or fasten a nail, staple, screw, etc., by hammering the protruding point so that it is bent over.
References in periodicals archive ?
Because it concentrates forces on the upper and lower midline at the same time when a patient clenches, GrindGuardN is the only device ever shown to reduce clenching and grinding without having to visit the dentist," says Dr.
Under Armour - the official WRU supplier which produces the new pieces of kit - claims that whenever a sportsman clenches their jaw, the body releases performance-sapping hormones that produce stress, fatigue and distraction.
Her ass clenches, she has shifts in temperature, she starts grabbing people and fondling herself.