Noun
1. in (of a ball; in tennis, etc.); inside the lineSports, Usually written using kana alone, See also アウト Noun or verb acting prenominally
2. in; inside; internal; interiorUsually written using kana alone, See also アウト Expressions (phrases, clauses, etc.)
3. enter here; enter; entrance; (parking) entryon (parking) entrance signs
Noun
4. back nineGolf, Usually written using kana alone, See also アウト Noun
5. inside lane (track cycling, speed skating, etc.)Sports
Noun
6. check-in timeAbbreviation, See also チェックイン