Definition of "doggy"

doggy¹

/ˈdɒ.ɡi/

noun
plural doggies
1. (childish or endearing) A dog, especially a small one.
  Quotations
  "Come on now, there's a good doggie!"
  1946, George Johnston, Skyscrapers in the Mist, page 33
2. (sex) Doggy style.
3. (military, UK, informal) A junior temporarily assigned to do minor duties for a senior; a gofer.
  Quotations
  The Torpedo Officer and I were on the lower bridge and we each had a doggy, a young midshipman […]
  2008, Iain Ballantyne, HMS Rodney: The Famous Ships of the Royal Navy Series
adjective
not comparable
1. (slang, of sexual intercourse) Doggy style.
adverb
not comparable
1. (slang, of sexual intercourse) Doggy style.

doggy²

/ˈdɒ.ɡi/

adjective
comparative doggier, superlative doggiest
1. (informal) Suggestive of or in the manner of a dog.
  Quotations
  King Lune […] had just come from making a round of the kennels with his Huntsman and had only stopped for a moment to wash his doggy hands.
  1954, C. S. Lewis, The Horse and His Boy
  The house wore the startled doggy air of having been undeservedly rebuked. I knew the feeling.
  1993, John Banville, Ghosts
2. (informal) Fond of dogs.