Deletion of Barrel children (2nd nomination)

Comment: well-known concept; clearly notable. I wouldn't consider it a neologism since it wasn't coined by anyone in particular but arose out of common utilitarian use. Article is much more that a definition, so it doesn't fail  any more than philosophy, science, math, or most of the other ~2 million articles that exist
Stance: keep
Cited policy: Wikipedia:Wikipedia is not a dictionary (WP:DICT)