「女の人 (おんなのひと)」 means "woman." This term refers to an adult female person. It's a polite and general way to distinguish females from males. You can use it to refer to any woman you see or talk about.

成人(せいじん)の女性(じょせい)を指(さ)します。彼女(かのじょ)は優(やさ)しい女(おんな)の人(ひと)です。