Meaning of “topsoil” in the English Dictionary

English

(Definition of “topsoil” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"topsoil" in American English

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topsoilnoun [ U ]

us /ˈtɑpˌsɔɪl/

earth science the layer of earth in which plants grow:

rich topsoil

(Definition of “topsoil” from the Cambridge Academic Content Dictionary © Cambridge University Press)