
1) Archil 2) Dyestuff 3) Orchil
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https://www.crosswordclues.com/clue/cudbear

1) Archil 2) Orchil
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https://www.crosswordclues.com/clue/cudbear

• (n.) A lichen (Lecanora tartarea), from which the powder is obtained. • (n.) A powder of a violet red color, difficult to moisten with water, used for making violet or purple dye. It is prepared from certain species of lichen, especially Lecanora tartarea.
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http://thinkexist.com/dictionary/meaning/cudbear/

violet, red, or bluish dyestuff, considered similar to orchil and used in colouring pharmaceuticals; also any colour obtained from this dye. Cudbear ...
Found on
http://www.britannica.com/eb/a-z/c/166

Purple-red colouring agent derived from the lichen Ochrolechia tartarea (family Lecanoraceae) and for the colouring principles from Roccellaceae used for colouring liquid pharmaceutical preparations. ... Synonym: crottle. ... (05 Mar 2000) ...
Found on
http://www.encyclo.co.uk/local/20973
Cud'bear` noun [ Also
cudbeard , corrupted from the name of Dr.
Cuthbert Gordon, a Scotchman, who first brought it into notice.]
1. A powder of a violet red color, difficult to moisten with water, used for making violet or purple dye. It is prepared from certain species of lichen, e...
Found on
http://www.encyclo.co.uk/webster/C/199

Type: Term Pronunciation: kŭd′bār Definitions: 1. Purple-red coloring agent used in pharmacy; derived from the lichen Ochrolechia tartarea (family Lecanoraceae). Synonyms: crottle
Found on
http://www.medilexicon.com/medicaldictionary.php?t=21783

Cudbear is a purple or violet coloured powder used in dyeing violet-purple and crimson, prepared from the Lecanora tartarea and other lichens growing on rocks in Sweden, Scotland, etc. The colour, however, is somewhat fugitive, and in Britain it is used chiefly to give strength and brilliancy to the indigo blues. There is little essential differenc...
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http://www.probertencyclopaedia.com/browse/AC1.HTM

Cudbear (Lecanora tartarea) is a lichen occurring chiefly in Scotland and Sweden. It was formerly celebrated for the purple dye which it yielded when treated with ammonia.
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http://www.probertencyclopaedia.com/browse/BCA.HTM

a violet coloring matter obtained from various lichens, esp. Lecanora tartarea.
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https://www.infoplease.com/dictionary/cudbear
No exact match found.