Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A prickly bramble of uncertain origin but ultimately derived from a western North American blackberry (Rubus ursinus).
  • n. The edible, dark wine-red to nearly black fruit of this plant, having a taste suggestive of raspberries.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A hybrid berry created from crossing a blackberry, red raspberry and a loganberry.

from the GNU version of the Collaborative International Dictionary of English

  • n. a cultivated hybrid bramble of California having large dark wine-red fruit with a raspberrylike flavor.
  • n. a large raspberry-flavored bramble fruit; a cross between blackberries and raspberries.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. cultivated hybrid bramble of California having large dark wine-red fruit with a flavor resembling raspberries
  • n. large raspberry-flavored fruit; cross between blackberries and raspberries

Etymologies

After Rudolph Boysen (died 1950), American botanist.
(American Heritage® Dictionary of the English Language, Fourth Edition)
Named after its creator Rudolf Boysen. (Wiktionary)

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