"The window is jammed shut.; How to treat a jammed finger or toe.; The printer is still jammed. Make sure that all the jammed paper is removed.; The ship was jammed between two rocks."
2.AdjectiveOvercrowded; congested.
"Certain routes of the city are heavily jammed.; These roads are hopelessly jammed with cars and mobile homes during holidays.; A jammed Oktoberfest beer tent."
3.AdjectiveRendered unusable by intentional interference.
"All their broadcasts are jammed.; The jammed programming is being distributed on USB sticks instead."