Away from public view.
Used other than figuratively or idiomatically: see behind, curtain.
Source: en.wiktionary.orgA woman who says she was raped across the state, she’s dressed up and made to stand behind the curtain. Source: Internet
Back mid-April, in a self-coined Lockdown Sessions clip on their Instagram IGTV, Higham gave a peek behind the curtain on how they generally start writing, building, and recording a song. Source: Internet
Being as reserved as he was — letting us peek behind the curtain of his emotions only a little at a time, as if drawing us into mysteries — it seemed he had so much more to give. Source: Internet
It's a desperate attempt by the (Left) to dress up a prostitute and make her stand behind the curtain and make her tell tales. Source: Internet
Just what is the actual nature of the relationship between the fiery Leftist wizards and that man behind the curtain, who looks a lot like George Soros? Source: Internet
Fans of soapy dramas or anything Ryan Murphy would undoubtedly love “Curtains” and its horror-infused peek behind the curtain of Hollywood. Source: Internet