verb

grasp (something) tightly with one’s hand.

he clasped her arm

grasp,grip,clutch,hold tightly,hang on to,cling to,take hold of,seize,grab

noun

a device with interlocking parts used for fastening things together.

a gold bracelet with a turquoise clasp

fastener,fastening,catch,clip,pin,hook,hook and eye,buckle,hasp,lock,fibula