noun
dominant hand
Refers to the hand one naturally prefers for writing, throwing, etc. Common in everyday conversation.
私は利き手が右です。
My dominant hand is my right hand.
利き手をけがして、左手で字を書く練習をした。
I injured my dominant hand and practiced writing with my left hand.
noun
skilled person; person of ability
Rare, somewhat old-fashioned usage. Refers to a person who is highly skilled or an expert, often in a craft or art. More commonly expressed as 腕利き or 名人 in modern Japanese.
彼はこの道の利き手だ。
He is a master-hand in this field.