Function: noun
Date: circa 1874
: a sand or gravel bed for filtering water or sewage
FILTER BED
Meaning of FILTER BED in English
Merriam Webster Collegiate English Dictionary. Merriam Webster - Энциклопедический словарь английского языка. 2012
Function: noun
Date: circa 1874
: a sand or gravel bed for filtering water or sewage
Merriam Webster Collegiate English Dictionary. Merriam Webster - Энциклопедический словарь английского языка. 2012