jam-packed

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See also: jampacked

English

Etymology

jam +‎ packed

Adjective

jam-packed (comparative more jam-packed, superlative most jam-packed)

  1. (informal) Packed or filled tightly.
    • 2021 December 29, “Our railway from behind the lens...”, in RAIL, number 947, page 38, photo caption:
      Summer holidays: 'Staycationers' alight at London Paddington from a full train from the West Country. No matter what time of day, the trains are invariably jam-packed when they arrive at a London terminus.

Verb

jam-packed

  1. simple past and past participle of jam-pack