bird dog vs wink

bird dog

noun
  • A tout. 

  • A dog, especially a pointer, used in shooting to retrieve the dead birds. 

  • A person who seeks out real estate investment opportunities in exchange for a fee. 

  • A person who tries to steal someone else's romantic partner 

  • A radar detector (for detecting police speed traps). 

  • A hyperextension exercise performed lying on the knees, with one arm and the opposite leg lifted. 

verb
  • A multiservice tactical brevity code requesting configuration of sensors. 

  • To seek out. 

  • To watch closely. 

wink

noun
  • A subtle allusion. 

  • Synonym of periwinkle 

  • A brief time; an instant. 

  • The smallest possible amount. 

  • An act of winking (a blinking of only one eye), or a message sent by winking. 

  • A brief period of sleep; especially forty winks. 

  • Synonym of tiddlywink (“small disc used in the game of tiddlywinks”) 

verb
  • To close one's eyes quickly and involuntarily; to blink. 

  • To blink with only one eye as a message, signal, or suggestion, usually with an implication of conspiracy. (When transitive, the object may be the eye being winked, or the message being conveyed.) 

  • To close one's eyes. 

  • To gleam fitfully or intermitently; to twinkle; to flicker. 

  • Usually followed by at: to look the other way, to turn a blind eye. 

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