锁链

锁链	suǒ liàn	chains / shackles
锁	suǒ	to lock; to lock up / a lock (CL:把)
锁	suǒ	old variant of 锁
链	liàn	chain / cable (unit of length: 100 fathoms, about 185 m) / chain (unit of length: 66 feet, about 20 m) / to chain / to enchain