Greaser (noun)

1. A person, typically a man, who is associated with a particular subculture characterized by a rugged, rebellious, and often working-class image, typically characterized by slicked-back hair and leather jackets.
2. A person who works with or handles greasy substances.

Origin:

From the word grease, referring to the oily or greasy appearance of a person's hair or clothing, often associated with a particular subculture or style.

Examples:

1. The greasers were a group of young men who dressed in leather jackets and slicked back hair.
2. The greaser had a tough and rebellious image.
3. The greasers were known for their love of motorcycles and rock and roll music.
4. The mechanic was a greaser, covered in oil and grease from working on engines.
5. The greaser's hair was slicked back with pomade.