0 a large container full of old clothes, hats, and things such as masks or jewellery that can be used for children's games or performances:
When I wear high heels I feel like a little girl who has been rummaging in the dressing-up box.
Kids used to have a dressing-up box, now they have a Playstation.
I found a giant pair of sunglasses in the dressing-up box.
Is there anything in the dressing-up box that I can use for wings?