Uncap (verb)

1. To remove a cap or lid from something.
2. To release something that was previously capped or sealed.

Origin:

From un- + cap.

Examples:

1. He uncapped the bottle of soda.
2. She uncapped the pen to sign the document.
3. He uncapped the jar of peanut butter.
4. The oil well was uncapped to allow the oil to flow.
5. She uncapped the tube of toothpaste.