Verb (5-dan, る, intransitive)
1. to enter; to come in; to go in; to get in; to arrive
みんな一緒に入りましょ？Shall we all go in together?
2. to join (a club, company, etc.); to enter (a university, the army, etc.); to enroll (in); to go into (e.g. politics); to get into
部活入ってないから暇だろ。You're not in any club, so you've got free time, right?
3. to be contained (in); to be included (in); to be inside (e.g. a box); to come under (a heading); to belong (in a category)
その中にはなにが入っているのかしら？I wonder what is inside it?
4. to (be able to) fit (in a container, building, etc.); to be (able to be) held; to be (able to be) accommodated
甘さ控えめで、いくらでも入りそうです。It is not too sweet, so it seems like I could eat as much as I want.
5. to be introduced; to be brought in; to be installed
うちの会社に新しいシステムが入った。A new system was introduced at our company.
6. to be received; to be obtained
今月は臨時収入が入った。I got some extra income this month.
7. to be scored (of points); to be won (of votes)
後半に一点が入り、試合は同点になった。A point was scored in the second half, tying the game.
8. to turn on; to start functioning; to start working
急にエアコンが入った。The air conditioner suddenly came on.
9. to enter (a month, season, etc.); to reach (e.g. a climax); to get to (e.g. the main topic); to enter into (e.g. negotiations); to start (doing); to begin
それでは自己紹介も済んだので、授業の説明に入ります。Now that the self-introductions are finished, I will begin explaining the class.
10. to form (of a crack, fissure, etc.); to develop
壁に大きな亀裂が入った。A large crack formed in the wall.
11. to be put in (of effort, spirit, feeling, etc.); to be applied (e.g. of strength)
今日はみんな練習に気合が入っている。Everyone is really fired up at practice today.
12. to be ready (of tea, coffee, etc.); to be made
お茶が入りましたよ。The tea is ready.
13. to enter the body (of alcohol); to become drunk
酒が入ると彼はよくしゃべる。He talks a lot once he's had a drink.