mulch
noun /mʌltʃ/
/mʌltʃ/
[countable, uncountable]- material, for example, decaying leaves, that you put around a plant to protect its base and its roots, to improve the quality of the soil or to stop weeds growing
覆盖物，覆盖料（用以保护植物根基、改善土质或防止杂草生长） Collocations DictionaryMulch is used after these nouns:- bark
词源mid 17th cent.: probably from dialect mulch ‘soft’ used as a noun, from Old English melsc, mylsc.