sidelock vs syrup of figs

sidelock

noun
  • A lock of hair worn at the side of the head. 

  • The design of a gun that has the lockwork mounted to the inside of a plate; compare boxlock. 

syrup of figs

noun
  • A wig. 

  • A type of laxative made from figs. 

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