
Alquifou (based, along with the word alcohol, on the Arabic word `al-kuhl`), is a lead ore found in Cornwall, England, used by potters for its green glaze. ...
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http://en.wikipedia.org/wiki/Alquifou

• (n.) A lead ore found in Cornwall, England, and used by potters to give a green glaze to their wares; potter`s ore.
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http://thinkexist.com/dictionary/meaning/alquifou/
Al'qui·fou noun [ Equiv. to
arquifoux , French
alquifoux , Spanish
alquifól , from the same Arabic word as
alcohol . See
Alcohol .] A lead ore found in Cornwall, England, and used by potters to give a green glaze to their wares; potter's ore.
Found on
http://www.encyclo.co.uk/webster/A/62

Alquifou is a sort of lead ore used by potters as a green varnish or glaze.
Found on
http://www.probertencyclopaedia.com/browse/AA.HTM
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