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1.
noun, slang

1. The name of an experimental Rock band from Madison Wisconsin.

2. A term for female genitalia.

A Swerve Engine is anything that causes a state of confusion or euphoria. Such as drugs, alcohol or really good sex.
It can also be anything that causes you to be out of control or enraged. Essentially causing you to, "get your swerve on".
"Man my girl has the nicest swerve engine you could ever touch."
by Mr. SnowmanPants September 08, 2011