Erica arborea, tree heath, briar, brier - evergreen treelike Mediterranean shrub having fragrant white flowers in large terminal panicles and hard woody roots used to make tobacco pipes

briarwood, brier-wood, brierwood - wood from the hard woody root of the briar Erica arborea; used to make tobacco pipes

root - (botany) the usually underground organ that lacks buds or leaves or nodes; absorbs water and mineral salts; usually it anchors the plant to the ground