root·worm 
(rtwûrm′, rt-)
(rtwûrm′, rt-)n.
Any of several chrysomelid beetles of the genus Diabrotica, the larvae of which feed on the roots of corn and other crop plants.
- over one's head
- over one's skis
- overoptimism
- overoptimistic
- overoptimistically
- overpass
- overpay
- overpayment
- overpersuade
- overpersuasion
- overplay
- overplus
- overpopulate
- overpopulation
- overpower
- overpowering
- overpoweringly
- overpraise
- overprescribe
- overprescription
- overpressure
- overpressurization
- overprice
- overprint
- overprivileged