Share this entry

Share this page

pitchstone

Line breaks: pitch|stone
Pronunciation: /ˈpɪtʃstəʊn
 
/

Definition of pitchstone in English:

noun

[mass noun] Geology
A dull vitreous rock resembling hardened pitch, formed by weathering of obsidian.
Example sentences
  • This feature was once described as ‘the finest ‘small’ mountain feature in the British Isles ’, and is in reality an east-west ridge of volcanic rock which appears as a narrow upthrust of columnar pitchstone when seen from the south or east.
  • Similarly, Arran pitchstone has turned up in Ireland and Orkney, highlighting the complex exchange networks between these places.
  • Also found was a flake of green Arran pitchstone, thought to be a waste fragment from the manufacture of a tool.

Words that rhyme with pitchstone

Tinseltownringtone

Definition of pitchstone in:

Share this entry

Share this page

 

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day reciprocity
Pronunciation: ˌrɛsɪˈprɒsɪti
noun
exchanging things with others for mutual benefit…