dig out vs trephine

dig out

verb
  • To have penetrative sexual intercourse with someone. 

  • To block a yorker with the bottom of the bat, at the last second. 

  • To remove something by digging. 

  • To make something by digging. 

  • To decamp; to leave a place hastily. 

  • To find or retrieve something buried. 

trephine

verb
  • To perforate with a trephine. 

  • To use a trephine during surgery. 

noun
  • A surgical instrument with a cylindrical blade used to remove a circular section of tissue, f.e. bone or cornea; a trepan. 

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