English

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Etymology

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This etymology is missing or incomplete. Please add to it, or discuss it at the Etymology scriptorium.
Particularly: “Some sources say it's because you could eat the snacks with one hand; others refer to a type of wide-armed chair.”

Noun

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one-arm lunchroom (plural one-arm lunchrooms)

  1. (US, slang) A diner serving snacks and simple meals.
    Synonyms: one-arm joint, one-arm restaurant