Definition of "bramble"

The hovel stood in the centre of what had once been a vegetable garden, but was now a patch of rank weeds. Surrounding this, almost like a zareba, was an irregular ring of gorse and brambles, an unclaimed vestige of the original common.

1944, Miles Burton, chapter 5, in The Three Corpse Trick

At the same time, the encroachment of vegetation proceeds apace, and broom and brambles have already made portions of the line impassable, even on foot.

1949 November and December, “Notes and News: Festiniog and Welsh Highland Railways”, in Railway Magazine, page 408

Jeanette is making bramble jelly. She is trying to listen to the Morning Story on Radio 4 while she goes about her task. Jeanette's brow is furrowed as she weighs the deep purple fruit and tips the berries into the heavy jelly pan […]

2016, Ann Burnett, Take a Leaf Out of My Book, page 37

A similar instinct for self-preservation was the cause of my first lie. My governess left me alone for half an hour with strict instructions to eat no blackberries during her absence. When she returned I was suspiciously near the brambles. ‘You have been eating blackberries’, she said. ‘I have not’, I replied. ‘Put out your tongue!’ she said. Shame overwhelmed me, and I felt utterly wicked.

1975, Bertrand Russell, chapter 1, in Autobiography