More on Gowk from Infoplease:

• gowk: meaning and definitions - gowk: Definition and Pronunciation
• Gowk - Gowk (See Gouk.) Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894 Related Content ...
• Hunting the Gowk - Hunting the Gowk (See April Fool.) Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894 ...
• Gowk-thrapple - Gowk-thrapple (Maister). A pulpitdrumming “chosen vessel” in Scott's Waverley. ...
• Gouk - Gouk or Gowk. In the Teutonic the word gauch means fool; whence the Anglo-Saxon geac, a cuckoo, and ...