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.
- social scientist
- social secretary
- social security
- social service
- social studies
- social work
- social worker
- societal
- societally
- society
- Society Islands
- Society of Friends
- Society of Jesus
- Socinian
- Socinianism
- Socinus
- socio-
- sociobiological
- sociobiologist
- sociobiology
- sociocultural
- socioculturally
- sociodrama
- socioeconomic
- sociogenic