Source : Webster's Revised Unabridged Dictionary (1913)

Sowbane \Sow"bane`\, n. (Bot.)
   The red goosefoot ({Chenopodium rubrum}), -- said to be fatal
   to swine.

Source : WordNet®

Chenopodium rubrum
     n : common Eurasian weed; naturalized in United States [syn: {red
         goosefoot}, {French spinach}]