Real Dictionary

wit
countable noun: If you describe someone as a wit, you mean that they have the ability to use words or ideas in an amusing, clever, and imaginative way.
uncountable noun: Wit is the ability to use words or ideas in an amusing, clever, and imaginative way.

wit in American English 1
the mind
noun: the keen perception and cleverly apt expression of those connections between ideas that awaken amusement and pleasure

wit in American English 2
to know
to know or learn

wit in British English 1
noun: the talent or quality of using unexpected associations between contrasting or disparate words or ideas to make a clever humorous effect

wit in British English 2
adverb
verb: to be or become aware of (something)