pest
noun [ C ] uk/pest/ us/pest/
（破坏庄稼的）有害小动物（或昆虫）；害虫
an insect or small animal that is harmful or damages crops
common pests such as rats, mice, or cockroaches 老鼠、蟑螂等常见害虫
informal讨厌的人;（尤指孩子）讨厌鬼
an annoying person, especially a child
Put that back, you little pest! 把它放回去，你这个小讨厌鬼！