鎖(suo)具是(shi)指(zhi)起(qi)封(feng)閉(bi)作(zuo)(zuo)用(yong)(yong)(yong)的器(qi)具,它包括鎖(suo)、鑰匙(chi)及其(qi)附件,一般解(jie)釋為(wei)“必須用(yong)(yong)(yong)鑰匙(chi)方能開(kai)脫(tuo)的封(feng)緘器(qi)”,現(xian)在,鎖(suo)具除用(yong)(yong)(yong)鑰匙(chi)開(kai)啟外,還可以用(yong)(yong)(yong)光(guang)、電、磁(ci)、聲及指(zhi)紋等(deng)指(zhi)令(ling)開(kai)啟。鎖(suo)具不單是(shi)防護用(yong)(yong)(yong)品,還具有(you)“管(guan)理”和“裝飾(shi)”的作(zuo)(zuo)用(yong)(yong)(yong)。在國(guo)際交(jiao)往中也(ye)有(you)一種禮儀,用(yong)(yong)(yong)贈(zeng)送象征性的“鑰匙(chi)”作(zuo)(zuo)為(wei)友誼的表示。