the world > textiles and clothing > clothing > types or styles of clothing > clothing for body or trunk (and limbs) > [noun] > clothing for chest or breast > types of > knot or bow (2)
a knot of ribbon, or similar decoration, worn on the chest.
As a modifier, with the sense ‘worn on, around, or near the chest; located on the chest’, as in breast badge, breast bow, breast button, breast girdle…