cloakroom

[ klohk-room, -roo m ]

/ ˈkloʊkˌrum, -ˌrʊm /

a room in which outer garments, hats, umbrellas, etc., may be left temporarily, as in a club, restaurant, etc.; checkroom.

a room adjacent to a legislative chamber or legislative room, where legislators may leave their coats, relax, or engage in informal conversation.

British.

a bathroom; a public rest room.
a baggage room, as at a railway station, where packages and luggage may be left temporarily or checked through to one's destination.

Origin of cloakroom

First recorded in 1850–55; cloak + room

Its enemies are many of the men and women he shares a cloakroom with—any Republican senator who did not join in.

Ted Cruz’s Fake Fight Against Obamacare Is Making Millions |Patricia Murphy |September 25, 2013 |DAILY BEAST
Maybe he planned on stoppin' in at the cloakroom too, and seein' if I was holdin' down the job proper.

Torchy |Sewell Ford
The thing had been done in the cloakroom where the kindergarten children hung their hats and coats.

McTeague |Frank Norris
I made my way to the cloakroom, grabbed my coat and bag, and rushed for the front door.

Punch, or the London Charivari, Vol. 146, June 17, 1914 |Various

They hurried from the cloakroom and tore into the hall, to discover the truth for themselves.

Loyal to the School |Angela Brazil
Seven women, imprisoned in the cloakroom, were crying to be set free.

Nana, The Miller's Daughter, Captain Burle, Death of Olivier Becaille |Emile Zola

cloakroom

/ (ˈkləʊkˌruːm, -ˌrʊm) /

a room in which hats, coats, luggage, etc, may be temporarily deposited

British a euphemistic word for lavatory