Webster's Revised Unabridged Dictionary · 1913

Dewberry

Dewberry , noun

(a)
(Botany) The fruit of certain species of bramble (Rubus); in England, the fruit of Rubus casius, which has a glaucous bloom; in America, that of Rubus canadensis and Rubus hispidus, species of low blackberries.
(b)
(Botany) The plant which bears the fruit.
Feed him with apricots and dewberries. — Shakespeare