A plant which bears thorns or prickles; a bramble or brier; a prickly bush, shrub, or tree; a thorn-tree or thorn-bush; esp. any species of the genus…

A prickly, thorny bush or shrub in general; formerly including the bramble, but now usually confined to wild rose bushes.

Any bush that bears thorns; e.g. a hawthorn, a bramble. Also attributive.

A tree having or bearing thorns; in Great Britain, usually a hawthorn tree; in southern Africa, usually an acacia.

A diminutive thorn-bush.