eyewash vs turncock

eyewash

noun
  • The washing out of the eyes with copious water (usually water alone) to quickly remove an irritant, as for example in laboratories and industrial plants. 

  • A soothing medicated lotion for the eyes. 

  • Nonsense, flattery, or pretentiousness. 

verb
  • To keep information secret by sending false information to many people in one's own organization, and correct information to a select few. 

  • To fool with nonsense or flattery. 

turncock

noun
  • A tap or faucet that regulates the flow of a fluid. 

  • A person employed to turn on the water for the mains, to regulate the fireplugs, etc. for a water company. 

How often have the words eyewash and turncock occurred in a corpus of books? (source: Google Ngram Viewer )