Tap

tap
1. A hole or pipe through which liquor is drawn.
2. A plug or spile for stopping a hole pierced in a cask, or the like; a faucet.
3. Liquor drawn through a tap; hence, a certain kind or quality of liquor; as, a liquor of the same tap.
4. A place where liquor is drawn for drinking; a taproom; a bar.
5. (Science: mechanics) A tool for forming an internal screw, as in a nut, consisting of a hardened steel male screw grooved longitudinally so as to have cutting edges. On tap. Ready to be drawn; as, ale on tap. Broached, or furnished with a tap; as, a barrel on tap. Plug tap, the slag of a puddling furnace.
1. To pierce so as to let out, or draw off, a fluid; as, to tap a cask, a tree, a tumour, etc.
2. Hence, to draw from (anything) in any analogous way; as, to tap telegraph wires for the purpose of intercepting information; to tap the treasury.
3. To draw, or cause to flow, by piercing. He has been tapping his liquors. (Addison)
4. (Science: mechanics) To form an internal screw in (anything) by means of a tool called a tap; as, to tap a nut.
Origin: AS. Taeppa, akin to D. Tap, G. Zapfen, OHG. Zapfo, Dan. Tap, Sw. Tapp, Icel. Tappi. Cf. Tampion, Tip.


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