Definition of bloodworm
1
: any of various reddish annelid worms (as of genera Glycera or Tubifex) often used as bait
2
: any of several strongyle worms (genus Strongylus) that are parasitic in the large intestine of horses
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Merriam-Webster unabridged
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Time Traveler for bloodworm
The first known use of bloodworm was in 1736
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