Collins Concise English Dictionary © HarperCollins Publishers::

bullshit /ˈbʊlʃɪt/ slang n
  1. exaggerated or foolish talk; nonsense
  2. deceitful or pretentious talk
  3. (in the British Army) exaggerated zeal, esp for ceremonial drill, cleaning, polishing, etc
    Usually shortened to: bull
vb ( -shits, -shitting, -shitted)
  1. (intransitive) to talk in an exaggerated or foolish manner
  2. to talk bullshit to

'bullshit' also found in these entries:
In the English description: