Source : Webster's Revised Unabridged Dictionary (1913)

Roseworm \Rose"worm`\, n. (Zo["o]l.)
   The larva of any one of several species of lepidopterous
   insects which feed upon the leaves, buds, or blossoms of the
   rose, especially {Cac[ae]cia rosaceana}, which rolls up the
   leaves for a nest, and devours both the leaves and buds.