Definition of ptish in English:

ptish

Pronunciation /p(ə)ˈtɪʃ/ /tɪʃ/

exclamation

rare
  • An exclamation of contempt or disdain. Also as noun: an utterance of this.

Origin

Early 17th century; earliest use found in William Watson (?1559–1603), Roman Catholic priest and conspirator. Imitative.