locksmith; lock shop
Refers to a person who makes, repairs, or sells locks, or a shop specializing in locks and keys.
I lost my key, so I called a locksmith.
There is a small lock shop near the station.
Compound of 錠前 (jōmae, 'lock') and 屋 (ya, 'shop' or 'person'). The exact historical derivation is straightforward; the word refers to a person or shop dealing with locks.