SUBGRADE
Meaning of SUBGRADE in English
transcription, транскрипция: [ ˈsəb-ˌgrād ]
noun
Date: 1893
: a surface of earth or rock leveled off to receive a foundation (as of a road)
Merriam-Webster's Collegiate English vocabulary.
Энциклопедический словарь английского языка Merriam Webster.
2003