Source : Webster's Revised Unabridged Dictionary (1913)

Wartweed \Wart"weed`\, n. (Bot.)
   Same as {Wartwort}.

Source : WordNet®

wartweed
     n : not unattractive European weed whose flowers turn toward the
         sun [syn: {sun spurge}, {wartwort}, {devil's milk}, {Euphorbia
         helioscopia}]