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Dictionary definition for: Jam

1. (n) preserve of crushed fruit

2. (v) press tightly together or cram; "The crowd packed the auditorium"

3. (n) informal terms for a difficult situation; "he got into a terrible fix" "he made a muddle of his marriage"

4. (v) push down forcibly; "The driver jammed the brake pedal to the floor"

5. (n) a dense crowd of people

6. (v) crush or bruise; "jam a toe"

7. (n) deliberate radiation or reflection of electromagnetic energy for the purpose of disrupting enemy use of electronic devices or systems

8. (v) interfere with or prevent the reception of signals; "Jam the Voice of America" "block the signals emitted by this station"

9. (v) get stuck and immobilized; "the mechanism jammed"

10. (v) crowd or pack to capacity; "the theater was jampacked"

11. (v) block passage through; "obstruct the path"

WordNet 2.1 Copyright Princeton University. All rights reserved.