Definition of HORNSTONE (Meaning of HORNSTONE), a 9 Letter Word

Pronunciation:		'horn`stown


WordNet Dictionary

	Definition:	[n] a fine-grained metamorphic rock formed by the action of heat on clay rocks

HORNSTONE is a 9 letter word that starts with H.
	Synonyms:	hornfels

	See Also:	metamorphic rock

Webster's 1913 Dictionary

	Definition:	\Horn"stone`\, n. (Min.) A siliceous stone, a variety of quartz, closely resembling flint, but more brittle; -- called also {chert}.