3 Old HSK word(s): ☊封锁 ** C ☊锁 ** C ☊锁 ** C
挂锁* * 枷锁* * 经济封锁* * 开锁* * 拉锁* * 溜门撬锁* * 密码锁* *

Definitions from Unihan Copyright © 1991-2015 Unicode® Inc. All rights reserved.

密 dense, thick, close / intimate
码 number, numerals / yard / symbol
锁 lock, padlock / shackles, chains

Hsk Characters: 锁 *
HSK -Characters and beyond:
GbBig5EngRadMegaTripleMultilingual
锁 9501 + 鎖 + + lock, padlock / shackles, chains 金,钅 唢 Gold (Metal) 唢 (AF_TRIVIAL) suo3 +

Korean:

鎖 + 锁 쇠사슬 쇄 (쇠사슬 : a chain) or 자물쇠 쇄 (a lock)
3 NHSK word(s): 锁* 5 suo3to lock up/ to lock/ CL:把[ba3] 连锁* 6 lian2 suo3chain 封锁* 6 feng1 suo3to blockade/ to seal off
KOREAN6000 word(s):
1 KOREAN 2500 New HSK words):
锁 + suǒ 자물쇠. jamulsoe.
1 KOREAN Sentence(s):
大门已经锁上了。 + 대문이 닫혀 있어요. dae-muni dadhyeo isseoyo.