bullbrier
n 1: a very prickly woody vine of the eastern United States
growing in tangled masses having tough round stems with
shiny leathery leaves and small greenish flowers followed
by clusters of inedible shiny black berries [syn:
{bullbrier}, {greenbrier}, {catbrier}, {horse brier},
{horse-brier}, {brier}, {briar}, {Smilax rotundifolia}]