slick

1. A covering of liquid, particularly oil.

   Careful in turn three — there's an oil slick on the road.

2. Someone who is clever and untrustworthy.
3. A tool used to make something smooth or even.
4. A 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. A helicopter.
6. A 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.

7. A wide paring chisel used in joinery.

1. To make slick.

   The surface had been slicked.

1. Slippery or smooth due to a covering of liquid; often used to describe appearances.

   His large round head was shaved slick.

2. Appearing expensive or sophisticated.

   They read all kinds of slick magazines.

3. Superficially convincing but actually untrustworthy.

   That new sales rep is slick. Be sure to read the fine print before you buy anything.

4. (often used sarcastically) Clever, making an apparently hard task easy.

   Our new process for extracting needles from haystacks is extremely slick.

5. Extraordinarily great or special.

   That is one slick bicycle: it has all sorts of features!

6. Sleek; smooth

noun

The finer portion of crushed ore, as of gold, lead, or tin, separated by the water in certain wet processes.