trainspotter
/ˈtreɪnˌspɒtə(r)/noun
1- Brit. a person who collects train or locomotive numbers as a hobby〈英〉列车（或机车）号码收集爱好者。
1.1
- often derogatory a person who obsessively studies the minutiae of any minority interest or specialized hobby〈常贬〉痴迷研究少数人爱好或特殊嗜好细节的人。
派生词