IPA: /ˈhændˌwiːl/
KK: /ˈhændˌwiːl/
A wheel that is turned by hand, often used to control machinery or adjust settings.
He turned the handwheel to open the valve slowly.
Handwheel → The word is formed from "hand" (from Old English "hand", meaning the part of the body at the end of the arm used for manipulation) and "wheel" (from Old English "hwēol", meaning a circular object that revolves). A handwheel is a wheel that is operated by hand, typically used to control machinery or equipment.
Think of using your 'hand' to turn a 'wheel' — that's how a handwheel works.