incapable of producing offspring; producing no young; sterile; -- said of women and female animals.-not producing vegetation, or useful vegetation; /rile.-unproductive; fruitless; unprofitable; empty.-mentally dull; stupid.-a tract of barren land.-elevated lands or plains on which grow small trees, but not timber; as, pine barrens; oak barrens. they are not necessarily sterile, and are often fertile.