的まとを絞しぼる

expression, godan verb (-ru)

narrow down; home in on; focus on; target

Used when narrowing options, focusing attention, or targeting a specific person or thing. Often followed by ～に.

• 候こう補ほ者しゃを三さん人にんに的まとを絞しぼった。

  We narrowed down the candidates to three.

• 警けい察さつは彼かれを容よう疑ぎ者しゃとして的まとを絞しぼっている。

  The police are homing in on him as a suspect.