Jam (Turn It Up) definition

(1) Deliberate radiation or reflection of electromagnetic energy for the purpose of disrupting enemy use of electronic devices or systems

(2) Preserve of crushed fruit

(3) A dense crowd of people

(4) Informal terms for a difficult situation

"He got into a terrible fix"

"He made a muddle of his marriage"

(5) Interfere with or prevent the reception of signals

"Jam the Voice of America"

"Block the signals emitted by this station"

(6) Block passage through

"Obstruct the path"

(7) Crush or bruise

"Jam a toe"

(8) Crowd or pack to capacity

"The theater was jampacked"

(9) Get stuck and immobilized

"The mechanism jammed"

(10) Push down forcibly

"The driver jammed the brake pedal to the floor"

(11) Press tightly together or cram

"The crowd packed the auditorium"