English Dictionary

button lock

noun

A type of lock (for knives, and other tools, of folding or collapsing type) in which the lock is released with the press of a button, usually on the side of the handle; such a lock often allows the tool to be locked closed as well as locked open.

I accidentally pressed the button lock on my knife and couldn't open it.

意味（1）

A type of lock (for knives, and other tools, of folding or collapsing type) in which the lock is released with the press of a button, usually on the side of the handle; such a lock often allows the tool to be locked closed as well as locked open.

意味（2）

(metonymically) A knife or other tool with such a lock.