v.1. To enter something: They went into the tunnel and emerged from the other side an hour later. I went into my suitcase to get my toothbrush. I am going into my final year at school, so I need to start looking for a job.
2. To go to some central or particular location: I'll go into the office on Saturday and finish the report. I went into town to buy some clothing. The car went into the shop for repairs.
3. To impact something, especially unintentionally: I swerved and went into the stop sign.
4. To be invested in some activity: A lot of work has gone into this project. How much money went into fixing the roads last year?
5. To be added to something: In this cake recipe, the sugar goes into the batter before the flour.
6. To be able to enter something; to fit in something: My suitcases won't go into the overhead compartment.
7. To be a factor of some number: Five goes into fifteen three times.
8. To discuss or investigate something: The book doesn't go into any of the culture's religious practices. They said they could solve the problem, but they refused to go into the details.
9. To undertake as a profession or course of study: After I graduate, I'm going into the family business. I plan to go into law.
10. To come to be in some condition: Both patients went into a coma. The audience went into fits of laughter. We went into debt to send the children to college. The company is going into decline.
11. To begin to undergo some process or use: Two hundred more airplanes will soon go into production. A new coin went into circulation yesterday.