Peat (noun)

1. An accumulation of partially decayed vegetation or organic matter that is unique to natural areas called peatlands or mires.
2. A dark brown soil-like material formed by the partial decomposition of mosses and other plants in bogs, swamps, and fens. It is often used as a fuel and in horticulture for improving soil structure and acidity.

Origin:

Old english pæt, of germanic origin; related to dutch peat and german torf.

Examples:

1. Peat is a fossil fuel that is formed from the remains of mosses, grasses, and other vegetation.
2. The peat moss is harvested and used as a soil conditioner.
3. Peat is used as a fuel source in some parts of the world.
4. The peat bogs are important habitats for many plant and animal species.
5. Peat extraction can have negative impacts on the environment and the local ecosystem.