GNU Collaborative International Dictionary of English

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Found 2 definitions

  1.       
    Jam, v. t.  [imp. & p. p. Jammed (jămd); p. pr. & vb. n. Jamming.] [Either fr. jamb, as if squeezed between jambs, or more likely from the same source as champ See Champ.]

    [1913 Webster]


    1. To press into a close or tight position; to crowd; to squeeze; to wedge in; to cram; as, “rock fans jammed the theater for the concert”.

    [1913 Webster]

    The ship . . . jammed in between two rocks. De Foe.

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    2. To crush or bruise; as, “to jam a finger in the crack of a door”. [Colloq.]

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    3. (Naut.) To bring (a vessel) so close to the wind that half her upper sails are laid aback. W. C. Russell.

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    4. To block or obstruct by packing too much (people or objects) into; as, “shoppers jammed the aisles during the fire sale”.

    [PJC]


    5. (Radio) To interfere with (a radio signal) by sending other signals of the same or nearby frequency; as, “the Soviets jammed Radio Free Europe broadcasts for years during the cold war”.

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    6. To cause to become nonfunctional by putting something in that blocks the movement of a part or parts; as, “he jammed the drawer by putting in too many loose papers; he jammed the lock by trying to pick it”.

    [PJC]

  2.       
    jammed adj.  filled to capacity or overfilled; as, “the auditorium was jammed to the rafters”.

    Syn. -- full, jam-packed, packed.

    [WordNet 1.5 +PJC]

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