1.Use of a power tool (Or similar device) to create another venue for penetration, most often non-consensual.
2. Sexual fetish involving the use of tools (powered or otherwise) to achieve arousal and/or stimulation.
"See that hole in her side? They say that's where Billy Ray powertooled her... she's never been the same."
"Yep, powertooling will do that to yah"