hone in on
phrasal verb
honed in on;
honing in on;
hones in on
Definition of hone in on
US
: to find and go directly toward (someone or something)
The missile was honing in on its target.
—usually used figuratively Researchers are honing in on the cause of the disease.
Note: Although hone in on is widely used, many people regard it as an error for home in on.