利きき腕うで

noun

dominant arm; one's stronger arm

Refers to the arm a person naturally uses for writing, throwing, etc. Often used in contexts like sports, daily tasks, or injury.

• 彼かれは利きき腕うでを骨こっ折せつして、しばらく左ひだり手てで字じを書かいていた。

  He broke his dominant arm and wrote with his left hand for a while.

• 野や球きゅうでは、利きき腕うでと反はん対たいの手てでグローブをはめる。

  In baseball, you wear the glove on the hand opposite your throwing arm.