A bonnet is an old-fashioned hat that ties under the chin. Sometimes people dress babies up in frilly clothes and bonnets.

A bonnet isn't stiff like many hats are — instead, it's made of soft fabric and has no brim. It was common during the 17th and 18th centuries for women to wear bonnets, to keep their hair tidy and protected from dust and sun when they were outdoors. Today, you're less likely to see a bonnet on a grown woman, unless she's a historical reenactor or acting in a play. The root of bonnet is the Scottish bonat, "brimless hat."

Definitions of bonnet
  1. noun
    a hat tied under the chin
    synonyms: poke bonnet
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    a large bonnet that shades the face; worn by girls and women
    type of:
    chapeau, hat, lid
    headdress that protects the head from bad weather; has shaped crown and usually a brim
  2. verb
    dress in a bonnet
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    type of:
    put on or wear a hat
  3. noun
    protective covering consisting of a metal part that covers the engine
    synonyms: cowl, cowling, hood
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    type of:
    protection, protective cover, protective covering
    a covering that is intend to protect from damage or injury
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