home in on
- hone in on (proscribed)
- (military, of an aircraft) To draw close to a destination, especially using radar; (of a guided missile) to move towards a target.
- (idiomatic) To focus or narrow down to something; to find, draw closer or move towards, as by trial and error or a gradual seeking process.
- He used the clues to home in on the source of the flames.
- We are homing in on a solution.