鎖(suo)(suo)(suo)具(ju)是指起封閉作用(yong)(yong)(yong)的器(qi)具(ju),它包括(kuo)鎖(suo)(suo)(suo)、鑰匙(chi)及其附件,一(yi)般解釋為“必須用(yong)(yong)(yong)鑰匙(chi)方能開(kai)脫的封緘器(qi)”,現(xian)在,鎖(suo)(suo)(suo)具(ju)除用(yong)(yong)(yong)鑰匙(chi)開(kai)啟(qi)外,還可(ke)以用(yong)(yong)(yong)光、電、磁、聲(sheng)及指紋(wen)等指令開(kai)啟(qi)。鎖(suo)(suo)(suo)具(ju)不(bu)單(dan)是防(fang)護用(yong)(yong)(yong)品,還具(ju)有(you)“管(guan)理(li)”和“裝飾”的作用(yong)(yong)(yong)。在國際(ji)交往中也(ye)有(you)一(yi)種禮儀(yi),用(yong)(yong)(yong)贈送象(xiang)征性的“鑰匙(chi)”作為友誼的表示。