使つかいどころ

noun

use; application; where to use

Refers to the appropriate situation, timing, or purpose for using something; often implies finding the right opportunity or context.

• この道どう具ぐの使つかいどころがわからない。

  I don't know when to use this tool.

• 彼かれは本ほん当とうにここぞという使つかいどころで力ちからを発はっ揮きする。

  He really shows his strength at the crucial moment.