barber's pole worm
noun
\ ˈbär-bərz-ˌpōl-
\
\
variants:
also barber pole worm \ -bər \
Medical Definition of barber's pole worm
: a nematode stomach worm of the genus Haemonchus (H. contortus) that occurs typically in the abomasum of ruminants (as sheep) and rarely in humans