Peat moss Meaning, Definition & Usage

  1. noun any of various pale or ashy mosses of the genus Sphagnum whose decomposed remains form peat
    sphagnum; sphagnum moss; bog moss.

WordNet

Definitions
  1. . (a) The plants which, when decomposed, become peat . (b) A fen producing peat . (c) (Bot.) Moss of the genus Sphagnum, which often grows abundantly in boggy or peaty places.

Webster 1913