Exterminator

[ɪk'stɜːmɪneɪtə] or [ɪk'stɝmə,netɚ]

(noun.) someone who exterminates (especially someone whose occupation is the extermination of troublesome rodents and insects).

约翰校对--From WordNet

(n.) One who, or that which, exterminates.

巴塞洛缪校对