Real Dictionary

rap
A rap is an act of criticizing or blaming someone.
Rap is a type of music in which the words are not sung but are spoken in a rapid, rhythmic way.
countable noun: A rap is a piece of music performed in rap style, or the words that are used in it.
countable noun: A rap is a statement in a court of law that someone has committed a particular crime, or the punishment for committing it.
singular noun: The rap about someone or something is their reputation, often a bad reputation which they do not deserve.
verb: If you rap on something or rap it, you hit it with a series of quick blows.
verb: If you rap someone for something, you criticize or blame them for it.
verb: If you rap with someone about something, you talk about it in a relaxed or informal way.
verb: Someone who raps performs rap music.

rap in American English 1
a quick, sharp knock; tap
to knock quickly and sharply
to strike quickly and sharply; tap
intransitive verb: to knock smartly or lightly, esp. so as to make a noise
noun: a quick, smart, or light blow
transitive verb: to strike, esp. with a quick, smart, or light blow

rap in American English 2
in the early 18th cent., a counterfeit halfpenny in circulation in Ireland
noun: the least bit

rap in American English 3
to seize
transitive verb: to carry off; transport

rap in British English 1
verb: to strike (a fist, stick, etc) against (something) with a sharp quick blow; knock

rap in British English 2
noun: the least amount (esp in the phrase not to care a rap)