What is the meaning of Bramble?

Any of many closely related thorny plants in the genus Rubus including the blackberry and likely not including the raspberry proper.

Any thorny shrub.

A cocktail of gin, lemon juice, and blackberry liqueur.

The soft fruit borne by the species Rubus fruticosus formed of a black (when ripe) cluster of drupelets.

A collection of mutually touching connected subgraphs, where two subgraphs touch if they share a vertex or each includes one endpoint of an edge.

To pick or collect blackberries from brambles.

Source: wiktionary.org