tap

A conical peg or pin used to close and open the hole or vent in a container.

An object with a tapering conical form like a tap (etymology 1 sense 1); specifically, ellipsis of taproot (“long, tapering root of a plant”).

A hollow device used to control the flow of a fluid, such as an alcoholic beverage from a cask, or a gas or liquid in a pipe.

A procedure that removes fluid from a body cavity; paracentesis.

Liquor drawn through a tap (etymology 1 sense 2.2); hence, a certain kind or quality of liquor; also (figurative, informal), a certain kind or quality of any thing.

A device used to listen in secretly on telephone calls or other communications.

A secret interception of telephone calls or other communications using such a device; also, a recording of such a communication.

A situation where a borrowing government authority issues bonds over a period of time, usually at a fixed price, with volumes sold on a particular day dependent on market conditions.

A cylindrical tool used to cut an internal screw thread in a hole, with cutting edges around the lower end and an upper end to which a handle is fitted to turn the tool.

Ellipsis of taphouse or taproom (“place where alcoholic beverages are served on tap”).