rootworm

From root +‎ worm.

rootworm (plural rootworms)

1. A worm that tunnels through the roots of young plants.
   • 2009 February 20, Andrew Pollack, “Crop Scientists Say Biotechnology Seed Companies Are Thwarting Research”, in New York Times‎^[1]:

     Dr. Ostlie, at the University of Minnesota, said he had permission from three companies in 2007 to compare how well their insect-resistant corn varieties fared against the rootworms found in his state.

• moorwort, to morrow, tomorrow, to-morrow, wormroot