self-locking

adjective
self-lock·​ing | \ ˌself-ˈlä-kiŋ How to pronounce self-locking (audio) \

Definition of self-locking

: locking by its own action a self-locking door a self-locking nut [=locknut] Simply use self-locking cable ties (available in the electrical department of any hardware store) to secure the grate …— Mattie Sue Athan and Dianalee Deter

First Known Use of self-locking

1825, in the meaning defined above

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The first known use of self-locking was in 1825

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