TAP

a device by which a flow of liquid or gas from a pipe or container can be controlled

a device connected to a telephone for listening secretly to someone's conversations

an instrument for cutting a threaded hole in a material.

a taproom.

draw liquid through the tap or spout of (a cask, barrel, or other container)

exploit or draw a supply from (a resource)

connect a device to (a telephone) so that conversation can be listened to secretly

cut a thread in (something) to accept a screw

strike with a quick light blow or blows

designate or select (someone) for a task or honour, especially membership of an organization or committee

a quick light blow, or the sound of such a blow

tap dancing

a bugle call for lights to be put out in army quarters