relative pronoun
noun [ C ] language specialized uk/ˌrel.ə.tɪv ˈprəʊ.naʊn/ us/ˌrel.ə.t̬ɪv ˈproʊ.naʊn/
关系代词
a pronoun such as which, who, or that, used to begin a relative clause
In the sentence "The woman who stole my phone was wearing a brown jacket", "who" is a relative pronoun. 在句子 The woman who stole my phone was wearing a brown jacket中，who 是关系代词。