Definition of bullshit in English:

bullshit

noun

vulgar slang
  • [mass noun] Stupid or untrue talk or writing; nonsense.

verb

[WITH OBJECT]vulgar slang
  • Talk nonsense to (someone) in an attempt to deceive them.

Origin

Early 20th century: from bull + shit.

Pronunciation

bullshit

/ˈbʊlʃɪt/