peat

/piːt/
noun
  1. A dark, spongy material formed from decaying plants in wet areas like bogs, used as fuel or in gardening.
    • In Ireland, many people burn peat in their fireplaces to heat their homes.
    • The bog was a rich source of peat that had been forming for thousands of years.
    • Gardeners often mix peat into the soil to help retain moisture.
Synonyms
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