railroad worm noun
[probably from its dissemination by railroad] : apple maggot
[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)
First Known Use of RAILROAD WORM
Seen & Heard
What made you want to look up railroad worm? Please tell us where you read or heard it (including the quote, if possible).