Medical Definition of eye worm
: a parasitic worm found in the eye: as
a
: either of two slender nematode worms of the genus Oxyspirura (O. mansoni and O. petrowi) living beneath the nictitating membrane of the eyes of birds and especially chickens
b
: any member of the nematode genus Thelazia living in the tear duct and beneath the eyelid of dogs, cats, sheep, humans, and other mammals and sometimes causing blindness
c
: an African filarial worm of the genus Loa (L. loa) that migrates through the eyeball and subcutaneous tissues of humans — compare calabar swelling
Test Your Vocabulary
Which Word Does Not Belong?
-
- Which of these words does not mean "nonsense"?

Can you spell these 10 commonly misspelled words?
TAKE THE QUIZ
A daily challenge for crossword fanatics.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridged
Share eye worm