closed in on

Verb

close in on (third-person singular simple present closes in on, present participle closing in on, simple past and past participle closed in on)

1. (idiomatic) To enclose around; to tighten or shrink; to collapse.
   • Sometimes it feels like the walls are closing in on me.
2. (idiomatic) To catch up with in a chase; to near the end of a pursuit.
   • The police closed in on the suspect.
3. (idiomatic) To near a goal or completion.
   • I think we are closing in on the end of this project.