double birdie vs eagle

double birdie

eagle

noun
  • A 13th-century coin minted in Europe and circulated in England as a debased sterling silver penny, outlawed under Edward I of England. 

  • A gold coin with a face value of ten dollars, formerly used in the United States. 

  • A score of two under par for a hole. 

  • Any of several large carnivorous and carrion-eating birds in the family Accipitridae, having a powerful hooked bill and keen vision. 

verb
  • To score an eagle. 

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