jam

/dʤæm/
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jam

A child spreads strawberry jam on a slice of toast.

Definition

  1. Noun:

    • A sweet food made by cooking fruit with sugar to a thick consistency: A preserve or spread.
    • A crowded mass that impedes movement: A situation where people or vehicles are so densely packed that movement is difficult or impossible.
    • An awkward situation or predicament: (Informal) A difficult or problematic state of affairs.
    • The deliberate radiation of signals to interfere with communications or electronics: An act of electronic interference.

  2. Verb:

    • To press or squeeze something into a tight space: To pack or wedge something firmly.
    • To become stuck or cause to become stuck: To make a mechanism immovable by forcing parts together.
    • To block or obstruct a passage or area: To fill a space so fully that movement is prevented.
    • To interfere with radio or electronic signals: To broadcast signals deliberately to disrupt communications.
    • To play music informally, especially jazz or rock, with improvisation: (Informal) To participate in a jam session.
Usage and Examples

  • Noun (Food):

    • She spread strawberry jam on her toast.
    • I prefer homemade jam to jelly.

  • Noun (Crowd/Obstruction):

    • We were stuck in a traffic jam for an hour.
    • There was a jam of people at the entrance.

  • Noun (Problematic Situation):

    • I'm in a real jam; I've lost my wallet and keys.
    • He found himself in a financial jam.

  • Noun (Electronic Interference):

    • The military used radio jam to disrupt enemy communications.

  • Verb (To pack/wedge):

    • He tried to jam all his clothes into one suitcase.
    • She jammed her fingers into her ears to block the noise.

  • Verb (To become stuck):

    • The printer jammed again.
    • The window jammed and wouldn't open.

  • Verb (To block/obstruct):

    • Protesters jammed the city streets.
    • The accident jammed the highway.

  • Verb (To interfere with signals):

    • The station's signal was jammed by a pirate broadcaster.

  • Verb (To play music informally):

    • The band loves to jam together on weekends.
Advanced Usage and Nuances

  • "Jam session": An informal gathering of musicians to play music, often with improvisation.

    • They held an all-night jam session after the concert.

  • "To be in a jam": To be in a difficult situation.

    • Can you help me? I'm really in a jam.

  • "Jam-packed": Extremely full or crowded.

    • The stadium was jam-packed for the final game.
Variants and Related Words
  • Jammy (adjective): (British English, informal) Lucky.
    • That was a jammy win!
  • Traffic jam (noun phrase): A long line of vehicles on a road that cannot move or can only move very slowly.
  • Logjam (noun): A deadlock or bottleneck, often in discussions or processes.
    • A logjam in the negotiations.
Synonyms
  • Noun (Food): Preserve, conserve, marmalade.
  • Noun (Crowd): Crush, throng, congestion, bottleneck.
  • Noun (Predicament): Fix, pickle, spot, predicament, dilemma.
  • Verb (Pack): Cram, stuff, wedge, ram.
  • Verb (Stick): Stick, seize (up), bind.
  • Verb (Block): Obstruct, clog, congest, block up.
Related Phrasal Verbs / Constructions
  • Jam on: To apply or activate something forcefully and suddenly.
    • He jammed on the brakes to avoid the dog.
  • Jam something into/onto something: To force something into a space.
    • She jammed the plug into the socket.
Related Idioms
  • "Money for jam" (British English): Money that is easily earned for very little effort.
    • Getting paid to test video games is money for jam.
  • "Jam tomorrow": A pleasant thing that is often promised but rarely materializes.
    • The politicians are always offering us jam tomorrow.
jam

A child spreads strawberry jam on a slice of toast.

Noun
  1. deliberate radiation or reflection of electromagnetic energy for the purpose of disrupting enemy use of electronic devices or systems
  2. a dense crowd of people
  3. informal terms for a difficult situation
    • he got into a terrible fix
    • he made a muddle of his marriage
  4. preserve of crushed fruit
Verb
  1. block passage through
    • obstruct the path
  2. crowd or pack to capacity
    • the theater was jampacked
  3. get stuck and immobilized
    • the mechanism jammed
  4. interfere with or prevent the reception of signals
    • Jam the Voice of America
    • block the signals emitted by this station
  5. crush or bruise
    • jam a toe
  6. push down forcibly
    • The driver jammed the brake pedal to the floor
  7. press tightly together or cram
    • The crowd packed the auditorium

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