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n. - 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;

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Usage examples (38)
  • jam the Voice of America
  • jam a toe
  • The term jam-eating comes from when people worked in the mines.
  • One is the - there's not a sufficient amount of what we call jam sessions.
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Tutoring comment
  • The elderly usher was pushed up against the door "jamb" (door post) as the shrieking fans tried to "jam" (a mass of people causing a blockage) into the concert hall.
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