DEFINITION OF BONNET
When talking about womenswear, a bonnet is a woman's head-dress which has a brim of some kind and which ties under the chin. The tying under the chin may be the original distinctive element, since its etymology shows it "akin to Old Saxon gibund bundle, Old English bindan to bind". It is stiffer and more structured than a coif, which often ties on but is a close-fitting and entirely soft garment. It's different from a hat, which can have a brim, and may tie under the chin, but has an entirely different attitude.
Quilting, dressmaking, and history plied with the needle...
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