1. a woman’s or child’s hat with a wide brim and a flap at the back to protect the neck from the sun
Usage: historical

Examples

• The pioneer woman wore a blue sunbonnet while working in the garden.
• Little girls in the 1800s often wore sunbonnets to protect their faces from sunburn.
• The museum displayed a collection of vintage sunbonnets from the frontier era.
• She tied the sunbonnet’s strings under her chin before heading out to pick berries.
• The sunbonnet’s wide brim cast a shadow over her entire face.
• Prairie women relied on sunbonnets to shield themselves during long days outdoors.