"Careful in turn three — there's an oil slick on the road."
2.nounSomeone who is clever and untrustworthy.
3.nounA tool used to make something smooth or even.
4.nounA tire with a smooth surface instead of a tread pattern, often used in auto racing.
"You'll go much faster if you put on slicks."
5.nounA helicopter.
6.nounA camera-ready image to be used by a printer. The "slick" is photographed to produce a negative image which is then used to burn a positive offset plate or other printing device.
"The project was delayed because the slick had not been delivered to the printer."