from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A usually school-age child who regularly spends part of the day unsupervised at home while the parents are at work.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. latchkey kid
from the GNU version of the Collaborative International Dictionary of English
- n. A child who frequently spends part of the day at home without adult supervision, especially a school child who returns home before the parent(s) return from work. Called also door-key child.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a school-age child who is home without adult supervision for part of the day (especially after school until a parent returns home from work)
Sorry, no etymologies found.