It's a bit of a trick question! The word "tap" has multiple meanings and pronunciations:
* tap (verb): to strike lightly, to draw liquid from a container, to eavesdrop.
* tap (noun): a device for controlling the flow of liquid, a light blow, a place where telephone wires are connected.
Let me know if you were thinking of a specific meaning for "tap" and I can help find a homonym for that!