Definition of pish in English:

pish

exclamation

dated
  • Used to express annoyance, impatience, or disgust.

    • ‘My brain is in total shut down mode, a splitting headache, nose running, exhausted… pish.’
    • ‘To put it into perspective, I used to spend hours - pish, days - solidly playing some of the ancient Amiga games.’

Origin

Natural utterance: first recorded in English in the late 16th century.

Pronunciation:

pish

/pɪʃ/