S: (n) nail (a thin pointed piece of metal that is hammered into materials as a fastener)
S: (n) bolt (a screw that screws into a nut to form a fastener)
S: (n) rivet (heavy pin having a head at one end and the other end being hammered flat after being passed through holes in the pieces that are fastened together)
S: (n) clamp, clinch (a device (generally used by carpenters) that holds things firmly together)
S: (n) hug, clinch, squeeze (a tight or amorous embrace) "come here and give me a big hug"
Verb
S: (v) clinch (secure or fasten by flattening the ends of nails or bolts) "The girder was clinched into the wall"
S: (v) clinch (hold a boxing opponent with one or both arms so as to prevent punches)
S: (v) clench, clinch (hold in a tight grasp) "clench a steering wheel"