Noun rubus ursinus has 1 sense
  1. western blackberry, western dewberry, Rubus ursinus - American blackberry with oblong black fruit
    --1 is a kind of blackberry, blackberry bush
    --1 has parts: blackberry
    --1 has particulars:
     boysenberry, boysenberry bush; loganberry, Rubus loganobaccus, Rubus ursinus loganobaccus
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