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
   "Hikers carefully avoided the thorny thickets of horse brier";
   - bullbrier, greenbrier, catbrier, horse-brier, brier, briar, Smilax rotundifolia

Derived forms: horse-briers, horse briers

Type of: vine

Part of: genus Smilax, Smilax

Encyclopedia: Horse brier