,noun, verb, tapped, tap⋅ping.| 1. | a cylindrical stick, long plug, or stopper for closing an opening through which liquid is drawn, as in a cask; spigot. |
| 2. | a faucet or cock. |
| 3. | the liquor drawn through a particular tap. |
| 4. | British. a taphouse or taproom. |
| 5. | a tool for cutting screw threads into the cylindrical surface of a round opening. |
| 6. | Surgery. the withdrawal of fluid: spinal tap. |
| 7. | a hole made in tapping, as one in a pipe to furnish connection for a branch pipe. |
| 8. | Electricity. a connection brought out of a winding at some point between its extremities, for controlling the voltage ratio. |
| 9. | Informal. an act or instance of wiretapping. |
| 10. | Archaic. a particular kind or quality of drink. |
| 11. | to draw liquid from (a vessel or container). |
| 12. | to draw off (liquid) by removing or opening a tap or by piercing a container. |
| 13. | to draw the tap or plug from or pierce (a cask or other container). |
| 14. | to penetrate, open up, reach into, etc., for the purpose of using something or drawing something off; begin to use: to tap one's resources. |
| 15. | to connect into secretly so as to receive the message or signal being transmitted: to tap a telephone wire or telephone. |
| 16. | to furnish (a cask, container, pipe, etc.) with a tap. |
| 17. | to cut a screw thread into the surface of (an opening). |
| 18. | to open outlets from (power lines, highways, pipes, etc.). |
| 19. | tap into, Informal. to gain access to; become friendly with: The candidate tapped into some wealthy supporters. |
| 20. | tap off, to remove (liquid, molten metal, etc.) from a keg, furnace, or the like: to tap off slag from a blast furnace. |
| 21. | on tap,
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tap (so) (for (sth))
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tap (tāp)
n.
The removal of fluid from a body cavity. v. tapped, tap·ping, taps
To withdraw fluid from a body cavity, as with a trocar and cannula, hollow needle, or catheter.
To strike lightly with the finger or a hammerlike instrument, as in percussion or to elicit a tendon reflex.