Definition of brambles:
(n) :
Any of many closely related thorny plants in the genus Rubus including the blackberry and likely not including the raspberry proper.
(n) :
Any thorny shrub.
(n) :
A cocktail of gin, lemon juice, and blackberry liqueur.
(n) :
(chiefly Scotland) The soft fruit borne by the species Rubus fruticosus formed of a black (when ripe) cluster of drupelets.
(v) :
To pick or collect blackberries from brambles.
(n) :
(graph theory) A collection of mutually touching connected subgraphs, where two subgraphs touch if they share a vertex or each includes one endpoint of an edge.