An extensive wood; a large tract of land covered with trees; in the United States, a wood of native growth, or a tract of woodland which has never been cultivated.
- A dense growth of trees, plants, and underbrush covering a large area.
- Something that resembles a large, dense growth of trees, as in density, quantity, or profusion: a forest of skyscrapers.
- A defined area of land formerly set aside in England as a royal hunting ground.
- To plant trees on.