Definition of "mackintosh"

mackintosh

/ˈmækɪntɒʃ/

noun
countable and uncountable, plural mackintoshes
1. A waterproof long coat made of rubberized cloth.
2. (by extension) Any waterproof coat or raincoat.
  Quotations
  John had great big waterproof boots on; / John had a great big waterproof hat; / John had a great big waterproof mackintosh -- / And that (Said John) is that.
  c. 1924, A.A. Milne, "Happiness", in When We Were Very Young
  The screeching of brakes, the monotonous blare of motor horns, the clip-clip of shoes on slippery pavements, the rustling of wet mackintoshes were all part of the great metropolis.
  1936, F.J. Thwaites, chapter XXII, in The Redemption, Sydney: H. John Edwards, published 1940, page 214
3. Waterproof rubberized cloth.