Definition of "pish"

pish

/pɪʃ/

interjection
1. Expressing disdain.
noun
plural pishes
1. A sibilant noise (e.g. "psshh") made by birders and ornithologists to attract small birds.
verb
third-person singular simple present pishes, present participle pishing, simple past and past participle pished
1. To try to attract birds by making a sibilant noise (e.g. "psshh").
2. To express contempt.
  Quotations
  Piſh for thee, Iſland dogge: thou prickeard cur of Iſland.
  1599, William Shakespeare, “The Life of Henry the Fift”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, [Act II, scene i], page 73, column 1
adjective
comparative more pish, superlative most pish
1. (vulgar, colloquial, chiefly Scotland) Of poor quality; very bad.