cartunlocker

noun
UK /ˈkɑːtʌnlɒkə/
US /ˈkɑːrtʌnlɑːkər/

A cart unlocker is a tool or person that opens a locked cart so it can move again.

The worker used a cart unlocker to free the stuck shopping carts.


OTHER MEANINGS

2. A device that releases the brake on a cart so it can roll.

He pressed the cart unlocker and the cart started rolling.

3. A person whose job is to unlock carts for customers.

The cart unlocker helped the shopper get a cart at the store.

4. A code or card that unlocks a cart's wheel lock.

She swiped the cart unlocker card to free the cart.