자물쇠를 만들거나 수리하고 열쇠를 제작하는 사람.
A person whose job is to make, install, and repair locks and keys.
예문:
"I had to call a locksmith after I accidentally locked my keys inside the car."
"The locksmith recommended installing a high-security deadbolt for the front door."
"It takes years of apprenticeship to become a master locksmith."