Source : WordNet®

devil's milk
     n 1: an Old World spurge introduced as a weed in the eastern
          United States [syn: {petty spurge}, {Euphorbia peplus}]
     2: not unattractive European weed whose flowers turn toward the
        sun [syn: {sun spurge}, {wartweed}, {wartwort}, {Euphorbia
        helioscopia}]