• deliberate radiation or reflection of electromagnetic energy for the purpose of disrupting enemy use of electronic devices or systems
• preserve of crushed fruit
• a dense crowd of people
• informal terms for a difficult situation; "he got into a terrible fix"; "he made a muddle of his marriage"
• interfere with or prevent the reception of signals; "Jam the Voice of America"; "block the signals emitted by this station"
• block passage through; "obstruct the path"
• crush or bruise; "Jam a toe"
• crowd or pack to capacity; "the theater was Jampacked"
• get stuck and immobilized; "the mechanism Jammed"
• push down forcibly; "The driver Jammed the brake pedal to the floor"
• press tightly together or cram; "The crowd packed the auditorium"

'Jam' in other languages