bind·erBrE/ˈbaɪndə(r)/NAmE/ˈbaɪndər/noun[C]ahardcoverforholdingsheetsofpaper, magazines, etc. together活页夹◆aringbinder活页夹[C]apersonormachinethatputscoversonbooks装订工;装订机[C, U]asubstancethatmakesthingsstickormixtogetherinasolidform黏合剂;黏结剂[C]amachinethatfastenswheatintobunchesafterithasbeencut(谷物)割捆机