bluebonnet

Definitions of bluebonnet
  1. noun
    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
    synonyms: Lupinus subcarnosus, Texas bluebonnet, buffalo clover
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    type of:
    lupin, lupine
    any plant of the genus Lupinus; bearing erect spikes of usually purplish-blue flowers
  2. noun
    a brimless dark blue Scottish cap with a flat top and a plume on one side
    synonyms: Balmoral
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    type of:
    cap
    a tight-fitting headdress
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