secretdial
nounUK /ˈsiː.krət.daɪ.əl/
US /ˈsiː.krət.daɪ.əl/
A secret dial is a small round part you turn to open something locked, like a hidden lock.
She turned the secretdial three times to open the treasure box.
OTHER MEANINGS
2. A hidden control knob on a device that only certain people know about.
The robot had a secretdial under its arm to change its voice.
3. A private phone number or contact that is not shared with everyone.
He gave her his secretdial so only she could call him.
4. A special turning wheel used in a game to pick a secret number.
Spin the secretdial to see how many steps you can move.