Source : Webster's Revised Unabridged Dictionary (1913)

Henbit \Hen"bit`\, n. (Bot.)
   A weed of the genus {Lamium} ({L. amplexicaule}) with deeply
   crenate leaves.

Source : WordNet®

henbit
     n : Eurasian plant having toothed leaves and small two-lipped
         white or purplish-red flowers [syn: {Lamium amplexicaule}]