A tapering cylindrical pin or peg used to stop the vent in a cask.

A device used to dispense liquids.

“We don't have bottled water; you'll have to get it from the tap.”

Liquor drawn through a tap; hence, a certain kind or quality of liquor.

“a liquor of the same tap”

To furnish with taps.

“If we tap the maple trees, we can get maple syrup!”

To draw off liquid from a vessel.

“He tapped a new barrel of beer.”

To deplete, especially of a liquid via a tap; to tap out.