To save this word, you'll need to log in.
horn·stone | \ ˈhȯrn-ˌstōn 
\
\Definition of hornstone
: a mineral that is a variety of quartz much like flint but more brittle
Keep scrolling for more
Comments on hornstone
What made you want to look up hornstone? Please tell us where you read or heard it (including the quote, if possible).
Test Your Vocabulary
Great Scrabble Words—A Quiz
- Which of the following Q-without-U words means the number five in cards or dice?
Can you spell these 10 commonly misspelled words?
TAKE THE QUIZ
Test Your Knowledge - and learn some interesting things along the way.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridgedWords at Play
Ask the Editors
Word Games
- Great Scrabble Words—A Quiz
Words to improve your Scrabble game
Take the quiz - Semantic Drift Quiz
A challenging quiz of changing words.
Take the quiz - Spell It
Can you spell these 10 commonly misspelled words?
Take the quiz - Add Diction
Build a chain of words by adding one letter at a time.
Play the game
Share hornstone
Time Traveler for hornstone
The first known use of hornstone was in 1728
See more words from the same year