What does "duty free" mean?

[Mthrcookie]

We will be staying on Cable Beach at the end of this month. I keep seeing "duty free" shopping, duty free liquor store....what does duty free mean?

[tamara zoo]

Duty free means that they do not pay import taxes on the products, and they pass that fact onto you. This allows some items to be cheaper than you can get in the states.
Most notable, perfume, jewelry and alcohol.