IPA: /ˈbækˌrʊm/
KK: /ˈbækˌrum/
Relating to activities that happen in a private or hidden place, often involving secretive or discreet actions.
The backroom deals were made without the public's knowledge.
A room that is located at the back of a building or space, often used for private meetings or activities.
The executives held their discussions in the backroom to avoid drawing attention.
Backroom → It is formed from "back" (from Old English "bæce", meaning the rear or behind) and "room" (from Old French "rom", meaning a space or area). The word "backroom" refers to a room located at the back of a building or establishment, often used for private or secretive activities.
Think of a space that is located at the 'rear' ('back') of a place, which is often used for private purposes — that's what a backroom is.