HORNSTONE
Meaning of HORNSTONE in English
transcription, транскрипция: [ ˈhȯrn-ˌstōn ]
noun
Date: 1728
: a mineral that is a variety of quartz much like flint but more brittle
Merriam-Webster's Collegiate English vocabulary.
Энциклопедический словарь английского языка Merriam Webster.
2003