tap

noun

1.
the sound made by a gentle blow
Derived from:
tap
2.
a gentle blow
Derived from:
tap
3.
a faucet for drawing water from a pipe or cask
Derived from:
tapster
4.
a small metal plate that attaches to the toe or heel of a shoe (as in tap dancing)
Derived from:
tap
5.
a tool for cutting female (internal) screw threads
Derived from:
tap
6.
a plug for a bunghole in a cask
Derived from:
tap tapster
7.
the act of tapping a telephone or telegraph line to get information
Derived from:
tap
8.
a light touch or stroke
Derived from:
tap