Tra từ tap - Từ điển American Heritage Dictionary 4th

I. tap¹ (tăp)v. tapped, tap·ping, tapsv. tr.
1. To strike gently with a light blow or blows:
I tapped you on the shoulder to get your attention.
2. To give a light rap with:
tap a pencil.
3. To produce with a succession of light blows:
tap out a rhythm.
4. To select, as for membership in an organization; designate. See Synonyms at appoint.
5.
a. To repair (shoe heels or toes) by applying a thin layer of leather or a substitute material.
b. To attach metal plates to (shoe toes or heels).v. intr.
1. To deliver a gentle, light blow or blows.
2. To walk making light clicks.n.
1.
a. A gentle blow.
b. The sound made by such a blow.
2.
a. A thin layer of leather or a substitute applied to a worn-down shoe heel or toe.
b. A metal plate attached to the toe or heel of a shoe, as for tap-dancing.
3. Linguistics. See flap. [Middle English tappen, possibly from Old French taper.] II. tap² (tăp)n.
1. A valve and spout used to regulate delivery of a fluid at the end of a pipe.
2. A plug for a bunghole; a spigot.
3.
a. Liquor drawn from a spigot.
b. Liquor of a particular brew, cask, or quality.
4. Medicine. The removal of fluid from a body cavity:
a spinal tap.
5. A tool for cutting an internal screw thread.
6. A makeshift terminal in an electric circuit.
7. A wiretap.tr.v. tapped, tap·ping, taps
1. To furnish with a spigot or tap.
2. To pierce in order to draw off liquid:
tap a maple tree.
3. To draw (liquid) from a vessel or container:
tap a new keg of beer.
4. Medicine. To withdraw fluid from (a body cavity).
5. To make a physical connection with or open outlets from:
tap a water main.
6.
a. To wiretap (a telephone).
b. To establish an electric connection in (a power line), as to divert current secretly.
7. To establish access to or a connection with:
tapped a new market for inexpensive books.
8. To take advantage of; make use of:
tapped voter anger to win the election.
9. To cut screw threads in (a collar, socket, or other fitting).
10. Informal. To ask (a person) for money.Phrasal Verb:tap into
1. To establish a connection with; have access to:
tapped into a new market for their products.
2. To take advantage of:
tapped into their enthusiasm to improve the school.Idiom:on tap
1. Ready to be drawn; in a tapped cask:
beer on tap.
2. Available for immediate use; ready:
extra personnel on tap. [Middle English tappe, from Old English tæppa.]