Railroad worm

What is Railroad worm?

Railroad worm definition and meaning on Dictionary terms:
noun
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.

 

reference: https://www.dictionary.com/browse/railroad-worm

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