Meaning of FUCK in English

FUCK

(noun) (no meaning) Term can be used with the definite article as a pure expletive in sentence initial position: 'What the fuck are you doing, Mary?' 'The fuck you say!' It can also be used with the definite article: 'Like fuck I'm going to date Mary tonight!' ++ the act of fucking' (roughly) Synonymous with 'piece of ass.' 'John had a hot fuck last night.'

Slang English vocab.      Английский сленговый словарь.