錠前 is read as じょうまえ (joumae) and means lock.
じょうまえ
joumae
じょうまえやぶり
breaking a lock
じょうまえや
locksmith
じょうざい
pill
じょう
lock
きげんぜん
pre-era
すんぜん
just in front of
えどまえ
Tokyo style
じゅうぜん
previous
ぼぜん
in front of a grave
がんぜん
before one's eyes
れいぜん
before the spirit of the deceased
てきぜん
in the face of the enemy