little girls' room

Meaning

Noun

• Synonym of ladies' room: a public lavatory intended for use by women.
• A room belonging to or used by little girls, particularly their bedroom.

Origin

• Originally from the need to find public lavatories for children, possibly by analogy with the somewhat earlier-attested little boys' room, but already in broader euphemistic use by its first known appearance in John O'Hara's BUtterfield 8.