0 someone who is very interested in what their neighbours (= people who live near them) are doing and tries to find out by looking out of the window without being seen:
The aim is to encourage a new generation of curtain twitchers to watch over neighbours' property and cars.
Is it the curtain-twitcher in all of us that makes reality TV so popular?
These neighbourhood chat apps are a gift to curtain-twitchers.
Curtain twitchers may be annoying but at least you know if your house gets broken into they'll be straight on the phone to the police.
