Dictionary

railroad worm

noun

Definition of RAILROAD WORM

1
[probably from its dissemination by railroad] :  apple maggot
2
[from the rows of luminescent spots along its sides making it resemble a lighted train] :  the larva or wingless female of any of several South American beetles (genus Phrixothrix of the family Cantharidae)
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First Known Use of RAILROAD WORM

1909

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