Definition of "pinky"

pinky¹

/ˈpɪŋki/

adjective
comparative pinkier, superlative pinkiest
1. Pinkish.
  Quotations
  In a pinky paper all folded neat,And they fastened it down with a pin.
  1871, Edward Lear, The Jumblies
noun
countable and uncountable, plural pinkies
1. (uncountable, historical, slang, Australia) Methylated spirits mixed with red wine or Condy's crystals.
  Quotations
  “Here,” Nigel greeted him, “do try a spot of ‘pinky,’ it's ever so much fun, really.”
  2006, Thomas Pynchon, Against the Day, Vintage, published 2007, page 262
2. A baby mouse, especially when used as food for a snake, etc.
3. (offensive, slang, ethnic slur) A white person.
4. (Australia, informal) The Australasian snapper or pink snapper (Chrysophrys auratus).
  Quotations
  You may get some pinkies around the Black Rock area, but the snapper *run* is normally from late October to mid January, although it sounds like the odd adult fish is still lurking..
  2001 May 3, Lindsay Vincent, “Re: snapper fishing in Victoria”, in aus.sport.fishing‎ (Usenet)
5. (historical) A kind of fishing schooner of New England.

pinky²

/ˈpɪŋki/

noun
plural pinkies
1. (US, Canada, Scotland, Australia, informal) The smallest finger or toe of a hand or foot.
  Quotations
  Everyday [sic] as he passes them, the hookers wave at him with their pinkies and say, “Hi there, little boy!”
  2003, Billoo Badhshah, The Unofficial Joke Book of Australia, page 126

pinky³

/ˈpɪŋki/

adjective
comparative pinkier, superlative pinkiest
1. winking