\Daph"nin\, n. [Cf. F. daphnine.] (Chem.)
(a) A dark green bitter resin extracted from the mezereon
    ({Daphne mezereum}) and regarded as the essential
    principle of the plant. [R.]
(b) A white, crystalline, bitter substance, regarded as a
    glucoside, and extracted from {Daphne mezereum} and {D.
    alpina}.