unstop

Etymology

From Middle English unstoppen, equivalent to un- + stop. Cognate with Dutch ontstoppen, German entstopfen.

verb

To remove a stoppage; to clear a blockage.“I was able to unstop the clogged toilet by using a plunger.”
To unplug or uncork a container.“I unstopped a bottle of wine to celebrate.”
To draw out the stops of (an organ).