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railroad worm

noun

  1. the larva of a fruit fly, Rhagoletis pomonella, that burrows through apples, forming tunnels that sometimes appear on the skin as faint depressions or darkened trails: a serious pest of apples in colder regions of North America.

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Word History and Origins

Origin of railroad worm1

First recorded in 1905–10

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railroad penrail-splitter

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