| Subject | English | Japanese |
| sumo. | achieve first victory after a string of losses | 初日が出る |
| sumo. | achieve first victory after a string of losses | 初日を出す |
| gen. | n first string | 一の糸 (of a shamisen, etc.) |
| sport. | first string players | 一軍 news1 nf11 |
| sport. | n first-string player | 正選手 |