- a broad, flat cap of blue woolen cloth, formerly worn in Scotland
- Archaic a Scotsman
- any of various blue-flowered lupines (esp. Lupinus subcarnosus) common in the SW U.S.
- a cornflower with blue blossoms
See bluebonnet in American Heritage Dictionary 4
- Either of two annual lupines (Lupinus texensis and L. subcarnosus) native to Texas and having palmately compound leaves and light blue flowers. Also called Texas bluebonnet.
a. A broad, blue woolen cap worn in Scotland.
b. A person wearing such a cap.
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