An unlicensed or on-the-side mechanic that you go to when you can't afford to go to a real mechanic. Often used when the job is simple, or you no longer want to dump money into your very old car.
Can also be applied to a halfway knowledgable person in any field (ie: computer repairs, home repairs, gender reassignment)
"I took my car to this grease monkey I know and he screwed up my tranny. That'll teach me to stop being cheap."
An automotive mechanic.
The word can be derisive or affectionate.
My brother in law is a grease monkey. He repairs Fords, so he always has plenty of work.
mechanic, or mechanically minded person
I got the grease monkey to fix my car
a mechanic who works with and repairs automobiles.
Cool extension for firefox
. Let's you run user scripts, that modify how a web page acts.
I use Greasemonkey in Youtube, I use a script that runs vids in HD automaticly.
Someone who goes in and gets things done. A finisher. A closer. An ace in the hole.
Yo you just paid off that bouncer? Way to take care of business greasemonkey.