Zero in on

From Fresh Dictionary

English

Transitive phrasal verb

to zero in on something

1. ((idiomatic{{#if:|, {{{2}}}{{#if:|, {{{3}}}{{#if:|, {{{4}}}{{#if:|, {{{5}}}{{#if:|, {{{6}}}{{#if:|, {{{7}}}{{#if:|, {{{8}}}{{#if:|, {{{9}}}}}}}}}}}}}}}}}}})) To aim precisely at a target

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

2. To successfully narrow down a search

   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 at task

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

4. To converge on something

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

zh:zero in on