General Definition:
1. Any thing that describes a broad, square-necked shape around the neck, such as jewellery or the neckline of a garment with a wide square border, or any thing or any action directly or indirectly associated with this, especially a pinafore.
As a Noun:
1. A dress with no sleeves which a woman or a girl wears over a blouse or sweater. English = pinafore.