brierberry
noun/ˈbɹaɪə(ɹ)ˌbɛɹi/
Etymology From brier + berry.
1
a prickly bush found in the eastern United States, Rubus cuneifolius
2
the brownish black fruit of that bush
Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.