the surface layer of soil
WordReference Random House Learner's Dictionary of American English © 2025
top•soil /ˈtɑpˌsɔɪl/USA pronunciation
n. [uncountable]
WordReference Random House Unabridged Dictionary of American English © 2025- Agriculturethe upper part of the soil, usually the best for growing things.
top•soil
(top′soil′),USA pronunciation n.
v.t.
- the fertile, upper part of the soil.
v.t.
- to cover (land) with topsoil.
- top1 + soil1 1860–65
Collins Concise English Dictionary © HarperCollins Publishers::
'topsoil' also found in these entries (note: many are not synonyms or translations):
A horizon
- Dust Bowl
- desertification
- dump
- freeze-up
- potting soil
- resoil
- wash
- wind erosion