鎖 - chain, irons, connection

blockade; lockdown; sealing off (an area)

closing; closure

chain; series; connection

economic blockade; embargo

national isolation; closing the country (to foreigners)

chain; chains

insular; closed; unsociable; exclusive

chainsaw

Berlin Decree (1806)

chain with a weight at the end (usu. a weapon)

chain stitch

linkage analysis