to try to persuade people to buy a product by advertising it in a particular way, using attractive packages etc:
If you could ever figure out how to market this you'd make a fortune.
market something for somebody
They plan to market the toy for children aged 2 to 6.
market something as something
Electric cars are being marketed as safe for the environment.
to make a product available in shops:
The turkeys are marketed ready-to-cook.