Definition of "mackintosh" in English

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.

3. Waterproof rubberized cloth.