Mulch (?), n. [Cf. mull dirt, also Prov. G. mulsch, molsch, rotten, soft, mellow, as fruit.]
Half-rotten straw, or any like substance strewn on the ground, as over the roots of plants, to protect from heat, drought, etc., and to preserve moisture.
© Webster 1913.
Mulch, v. t. [imp. & p. p. Mulched (?); p. pr. & vb. n. Mulching.]
To cover or dress with mulch.
© Webster 1913.