Jam up

verb

Definitions

Verb
  1. 1
    To cause (something) to become blocked or clogged; to clog up. transitive
  2. 2
    To become blocked or clogged. intransitive

    "The traffic jammed up on the boulevard."

  3. 3
    To cause trouble; to stop or inhibit (someone, something). figuratively, transitive

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