- a broad-leaved, Australian acacia, Acacia pycnantha, of the legume family, having short clusters of yellow flowers and yielding tanbark and a useful gum.
- any similar acacia, especially A. longifolia, of Australia and Tasmania.
- an Australian yellow-flowered leguminous plant, Acacia pycnantha, that yields a useful gum and bark
- any of several similar and related plants, esp Acacia longifolia of Australia
