What does "dewberry" mean?

Dewberry: (a) The fruit of certain species of bramble (Rubus); in England, the fruit of R. cæsius, which has a glaucous bloom; in America, that of R. canadensis and R. hispidus, species of low blackberries. (b) The plant which bears the fruit. Feed him with apricots and dewberries. Shak.

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