手枷[tegase] handcuffs
足枷[ashikase] fetters
首枷[kubikase] pillory
連枷[karazao] flail (for threshing grain)

手枷足枷[tekaseashikase] manacles
口枷[kuchikase] (mouth) gag
枷蚯蚓[kasemimizu] Epimenia verrucosa (mollusc)
子は三界の首枷[kohasangainokubikase] A child is an everlasting responsibility to parents

医療器械[iryoukikai] medical appliances
器械[kikai] machine
機械化[kikaika] mechanization
機械警備[kikaikeibi] card-key system
機械語[kikaigo] machine language

機械文明[kikaibunmei] technical civilization
機械翻訳[kikaihonyaku] machine translation
工作機械[kousakukikai] machine tools
産業機械[sangyoukikai] industrial machinery
手械[tegashi] handcuffs