(~s)
1.
Pests are insects or small animals which damage crops or food supplies.
...crops which are resistant to some of the major insect ~s and diseases...
...new and innovative methods of ~ control.
N-COUNT
2.
You can describe someone, especially a child, as a ~ if they keep bothering you. (INFORMAL)
He climbed on the table, pulled my hair, and was generally a ~.
= nuisance
N-COUNT disapproval