burstone

bur·stone

[bur-stohn]
noun
1.
any of various siliceous rocks used for millstones.
2.
a millstone of such material.
Also called buhr, burr.


Origin:
bur(r)4 + stone

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Based on the Random House Dictionary, © Random House, Inc. 2013.
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World English Dictionary
buhrstone, burstone or burrstone (ˈbɜːˌstəʊn) [Click for IPA pronunciation guide]
 
n
1.  a hard tough rock containing silica, fossils, and cavities, formerly used as a grindstone
2.  a grindstone or millstone made of this rock
 
[C18 burr, perhaps identical to burr1 (alluding to roughness)]
 
burstone, burstone or burrstone
 
n
 
[C18 burr, perhaps identical to burr1 (alluding to roughness)]
 
burrstone, burstone or burrstone
 
n
 
[C18 burr, perhaps identical to burr1 (alluding to roughness)]

00:10
Burstone is always a great word to know.
So is flibbertigibbet. Does it mean:
a chattering or flighty, light-headed person.
a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.
burstone (ˈbɜːˌstəʊn) [Click for IPA pronunciation guide]
 
n
a variant spelling of buhrstone

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