1. Low-growing annual herb of southwestern United States (Texas) having silky foliage and blue flowers; a leading cause of livestock poisoning in the southwestern United States
   - buffalo clover, Texas bluebonnet, Lupinus subcarnosus 
2. A brimless dark blue Scottish cap with a flat top and a plume on one side
   - Balmoral

Derived forms: bluebonnets

Type of: cap, lupin, lupine

Encyclopedia: Bluebonnet

• depth
• depth bomb
• depth charge
• depth finder
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• depth of field
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• depurative
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• Der Fuhrer
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• derailleur
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• Derain
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• derangement