curfn.
/kəːf/ local.
A cherty limestone found in one of the strata of the Portland beds of stone.
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the world > the earth > structure of the earth > constituent materials > rock > sedimentary rock > [noun] > limestone > others
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1839 Civil Engineer & Architect's Jrnl. 2 375/2 A middle or curf bed occurs only in the southernmost of the quarries.
1893 Spons' Mechanic's Own Bk. (ed. 4) 564 Then..the Bastard-Roach, Kerf, or Curf is reached.
1936 Discovery Mar. 76/2 Between the ‘Whit Bed’ and ‘Base Bed’ there is an irregular deposit of curf and flint, locally called ‘Pericott’.
This entry has not yet been fully updated (first published 1933; most recently modified version published online December 2020).
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n.1839