What is a "slicker"?

A slicker is a type of raincoat or overcoat that is designed to be waterproof and protect the wearer from rain and moisture. It is usually made from rubberized or waxed fabric that repels water and may have additional features such as a hood or pockets. Slickers are often worn in wet and rainy weather and are especially useful for outdoor activities such as hiking, camping, or fishing. They can come in a variety of colors and styles, from classic yellow to more modern designs with patterns or logos. Overall, a slicker is a practical and functional garment that helps keep the wearer dry and comfortable in wet weather conditions.