NOUN (1)

1. a protective covering of rotting vegetable matter spread to reduce evaporation and soil erosion;


VERB (1)

1. cover with mulch;
- Example: "mulch the flowerbeds"

The Collaborative International Dictionary of English v.0.48:

Mulch \Mulch\, n. [Cf. mull dirt, also Prov. G. mulsch, molsch,
   rotten, soft, mellow, as fruit.]
   Half-rotten straw, or any similar light, porous, organic
   substance strewn on the ground, as over the roots of plants,
   to protect from heat, drought, etc., and to hinder weed
   growth and preserve moisture.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Mulch \Mulch\, v. t. [imp. & p. p. Mulched; p. pr. & vb. n.
   Mulching.]
   To cover or dress with mulch.
   [1913 Webster]

WordNet (r) 3.0 (2006):

mulch
    n 1: a protective covering of rotting vegetable matter spread to
         reduce evaporation and soil erosion
    v 1: cover with mulch; "mulch the flowerbeds"

Moby Thesaurus II by Grady Ward, 1.0:

24 Moby Thesaurus words for "mulch":
   backset, cultivate, culture, cut, delve, dig, dress, fallow,
   fertilize, force, harrow, hoe, list, plow, prune, rake, spade,
   thin, thin out, till, till the soil, weed, weed out, work