pes·ti·cide 
(pĕstĭ-sīd′)
(pĕstĭ-sīd′)n.
A substance or agent used to kill pests, such as unwanted or harmful insects, rodents, or weeds.
pes′ti·cidal (-sīdl) adj.
- presternum
- prestidigitation
- prestidigitator
- prestige
- prestigious
- prestigiously
- prestigiousness
- prestissimo
- presto
- Preston
- presumable
- presumably
- presume
- presumedly
- presumer
- presuming
- presumingly
- presumption
- presumptive
- presumptively
- presumptuous
- presumptuously
- presumptuousness
- presuppose
- presupposition