Definition of "self-locking" []

• Locking automatically when closed (adjective)

WordNet. Princeton University. 2010.

• "ISO 13597: 2000, Aerospace - Inserts, self-locking, with MJ threads, open type, in metallic material, coated or uncoated - Dimensions by ISO TC 20/SC 4"
• "Consider a self-locking Dutch door that allows you to pass groceries into the house without letting your toddler out."
• "Other designs suitable for primary and secondary product packaging include boxes with tuck folds, self-locking bottoms, lids, and two piece telescoping construction."