'devil's milk' definitions:

Definition of 'devil's milk'

(from WordNet)
noun
An Old World spurge introduced as a weed in the eastern United States [syn: petty spurge, devil's milk, Euphorbia peplus]
noun
Not unattractive European weed whose flowers turn toward the sun [syn: sun spurge, wartweed, wartwort, devil's milk, Euphorbia helioscopia]