Crossword clues for hornstone
The Collaborative International Dictionary
Hornstone
Hornstone \Horn"stone`\, n. (Min.) A siliceous stone, a variety of quartz, closely resembling flint, but more brittle; -- called also chert.
Wiktionary
hornstone
n. hornfels
WordNet
hornstone
n. a fine-grained metamorphic rock formed by the action of heat on clay rocks [syn: hornfels]
Usage examples of "hornstone".
Kirkilgowock's silvery hornstone roofs shimmered two miles away across the Bay of Repose.