jam

informal terms for a difficult situation

preserve of crushed fruit

push down forcibly

“The driver jammed the brake pedal to the floor”

a dense crowd of people

deliberate radiation or reflection of electromagnetic energy for the purpose of disrupting enemy use of electronic devices or systems

block passage through

press tightly together or cram

interfere with or prevent the reception of signals

crush or bruise

“jam a toe”

crowd or pack to capacity

“the theater was jampacked”