noun
sheltered girl; naive girl; ingénue
Refers to a young woman who has been overprotected and raised without exposure to the real world, often implying innocence or naivety. Can be used affectionately or critically.
彼女は箱入り娘で、一人で電車に乗ったことがない。
She is a sheltered girl and has never ridden a train alone.
箱入
Having been raised as a sheltered daughter, she is somewhat naive about the world.
noun
wooden block puzzle; Daughter in the Box; Klotski
A sliding block puzzle where the goal is to move a specific block (the 'daughter') out of a frame. Also known by the brand name Klotski.
子供の頃、箱入り娘というパズルでよく遊んだ。
When I was a child, I often played with a puzzle called 'Daughter in the Box'.