A grassy plain in tropical and subtropical regions, with few trees.
Usage examples:
The lowlands include savannas, swamps, tropical rainforests, and semi-deserts.
proper noun
A port in georgia, just south of the border with south carolina, on the savannah river close to its outlet on the atlantic; population 132,410 (est. 2008).
noun
A large, flat area of land covered with grass, usually with few trees, that is found in hot countries, especially in africa