bluebonnet n 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 [syn: {bluebonnet}, {buffalo clover}, {Texas bluebonnet}, {Lupinus subcarnosus}] 2: a brimless dark blue Scottish cap with a flat top and a plume on one side [syn: {Balmoral}, {bluebonnet}]
Blue bonnet \Blue" bon`net\ or Blue-bonnet \Blue"-bon`net\, n. 1. A broad, flat Scottish cap of blue woolen, or one wearing such cap; a Scotchman. [1913 Webster] 2. (Bot.) A plant. Same as {Bluebottle}. [1913 Webster] 3. (Zool.) The European blue titmouse ({Parus c[oe]ruleus}); the bluecap. [1913 Webster]