thorn
θɔːn noun
一长排矮矮的荆棘树篱
3
a thorn in sb’s side
someone or something that annoys you or causes problems for a long period of time 某人的肉中刺〔指长时间让你心烦或给你惹麻烦的人或事〕,使人苦恼 (招来麻烦 )的人 (事 )