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®

sowbane
     n : herb considered fatal to swine [syn: {red goosefoot}, {Chenopodium
         hybridum}]