genre of African-American music of the 1980s and 1990s in which rhyming lyrics are chanted to a musical accompaniment; several forms of rap have emerged
the act of hitting vigorously;
"he gave the table a whack"
Verb:
strike sharply;
"rap him on the knuckles"
make light, repeated taps on a surface;
"he was tapping his fingers on the table impatiently"