Peat is a decayed plant material that takes in moisture, or the name for the dried version of this material when used as fuel.(noun)
An example of peat is a material someone may add to his or her garden.
See peat in Webster's New World College Dictionary
Origin: ME pete < ML peta, piece of turf, prob. < Celt *pett-, piece > piece, Welsh peth
See peat in American Heritage Dictionary 4
Origin: Middle English pete
Origin: , perhaps from Medieval Latin peta.
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