A bramble bush or thorny shrub, particularly one that produces blackberries or raspberries.
From Old English 'bræmble,' related to Proto-Germanic roots meaning thorny plant. It's an old word for the wild thorny vegetation that covered untamed land.
Brambles were so common and annoying to early English farmers that they named them with their own word separate from 'bush'—brambles basically defined the boundary between civilization and wilderness for medieval people.
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