mackintosh

Etymology

From Charles Macintosh (1766–1843), who patented a type of rubberized cloth in 1823. Former trademark. The letter k is a later addition.

noun

1. A waterproof long coat made of rubberized cloth.
2. (by extension) Any waterproof coat or raincoat.
   c. 1924, A.A. Milne, "Happiness", in When We Were Very Young 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.
   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.