leash vs three-way

leash

noun
  • A group of three 

  • A string with a loop at the end for lifting warp threads, in a loom. 

  • A brace and a half; a tierce. 

  • A set of three animals (especially greyhounds, foxes, bucks, and hares;) 

  • A strap, cord or rope with which to restrain an animal, often a dog. 

  • A leg rope. 

verb
  • To fasten or secure with a leash. 

  • to curb, restrain 

three-way

noun
  • Sexual activity involving three persons; a threesome; a ménage à trois. 

  • A serving of Cincinnati chili with spaghetti and cheese. 

adj
  • Relating to three different directions. 

How often have the words leash and three-way occurred in a corpus of books? (source: Google Ngram Viewer )