zero in on

Verb

zero in on

1. To adjust one's aim until precisely pointing at (a target).

   The pilot zeroed in on the bunker and launched a guided missile.

2. To successfully narrow down a search for.

   We have zeroed in on the source of the problem.

   See if you can zero in on the caller.

3. To concentrate or focus one's attention on (a task).

   One member of the check fraud team will zero in on the fingerprints.

4. To converge on.

   At the spring sale, everyone zeroed in on the bargain clothes.