Definitions from Wiktionary ( )

▸ noun:  (dated) A carnival performer specializing in bizarre and unappetizing behavior.
▸ noun:  (colloquial) A person who is intensely interested in a particular field or hobby and often having limited or nonstandard social skills. Often used with an attributive noun.
▸ noun:  (colloquial, by extension) An expert in a technical field, particularly one having to do with computers.
▸ noun:  (uncountable, colloquial) The subculture of geeks; an esoteric subject of interest that is marginal to the social mainstream; the philosophy, events, and physical artifacts of geeks; geekness.
▸ noun:  (colloquial) An unfashionable or socially undesirable person.
▸ verb:  (intransitive) To perform bizarre and unpleasant feats as part of a carnival.
▸ verb:  (intransitive, colloquial) To enthusiastically engage in geek-like or nerdy interests.
▸ verb:  (intransitive, African-American Vernacular, slang) To be nervous or hyperactive due to using crack cocaine.
▸ noun:  (Australia, colloquial) A look.
▸ verb:  (Cornwall) To look; to peep; to stare about intently.

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