Motorhead
What does motorhead mean?
A person who is knowledgeable about motors
Example
"Manny is only 2 but knows all the car manufacturers by the hood ornaments."
"He's gonna be such a motorhead when he grows up."
"He's gonna be such a motorhead when he grows up."

Car engine restored by a motorhead
Related Slang
Usage
✓ General
Last Updated: May 9, 2019
A motorhead is a person who knows a lot about motors, particularly automobiles. Understanding of motor functionality comes easily to motorheads and they typically like to tinker with them.
The "motor" part of the name comes from motors in cars and the "head" part refers to how knowledgeable the person is about motors. Being a motorhead can come in handy since cars often breakdown. However, it can get pretty annoying when friends and family want you to fix their cars all the time.