Definition of latchkeys:
(adj) :
Equipped with a key; generally in the phrase latchkey kid.
(n) :
A key, especially to an outside door.
(v) :
(transitive) To open something by means of a latchkey.
(n) :
Ellipsis of latchkey kid. [(informal) A schoolchild who carries keys to their residence because there is usually no parent home when school finishes.]
(n) :
Ellipsis of latchkey program. [(education) A childcare service that provides a supervised environment for elementary school-aged children before and after school, while their parents are working; often offer activities like homework assistance, reading, games, and crafts.]
(n) :
Alternative letter-case form of latchkey; especially when referring to a latchkey program. [A key, especially to an outside door.]