Slicker (noun)

A waterproof or water-resistant coat, usually made of rubber or plastic, worn to protect against rain.

Origin:

Derived from the word 'slick', meaning smooth and slippery.

Examples:

1. She put on her slicker and went out into the pouring rain.
2. He hung his slicker on the hook by the door before coming inside.
3. The workers all wore slickers to protect themselves from the rain while they worked.
4. She liked to wear her yellow slicker because it was so bright and cheerful.
5. He reached for his slicker when he saw the rain starting to fall.