verb (transitive)1. to close or squeeze together (the teeth, a fist, etc) tightly
 2. to grasp or grip firmly
  noun4. a device that grasps or grips, such as a clamp
  noun, verb5.   another word for clinch
 Word origin
Old English 
beclencan, related to Old High German 
klenken to tie, Middle High German 
klank noose, Dutch 
klinken rivet