Looking for the meaning or definition of the word geek? Here's what it means.
Noun
(dated) A carnival performer specializing in bizarre and unappetizing behavior.
(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.
(colloquial, by extension) An expert in a technical field, particularly one having to do with computers.
(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.
(colloquial) An unfashionable or socially undesirable person.
Verb
(colloquial) To behave geekishly or in a socially awkward manner, especially when under the influence of drugs or other psycho-active substances, and exhibiting such marked characteristics as hyperactivity, repetitiveness, talkativeness, nervousness, irritability, or paranoia.