When you invoke the VAX C compiler with -p for profiling it generates an assembly-language call to a profiling subroutine for which I substituted my own heap-checker, and that enabled me to zero in on a heap-violation which was caused by an array-out-of-bounds condition.
One member of the check fraud team will zero in on the fingerprints.
See if you can zero in on the caller.
The pilot zeroed in on the bunker and launched a guided missile.
At the spring sale, everyone zeroed in on the bargain clothes.