• (n.) Polishing rouge; a reddish brown oxide of iron, used in polishing glass, and also as a pigment; -- called also crocus Martis.
Found on
http://thinkexist.com/dictionary/meaning/colcothar/
Col'co·thar (kŏl'ko*thẽr)
noun [ New Latin
colcothar vitrioli , from Arabic
qolqotar .]
(Chemistry) Polishing rouge; a reddish brown oxide of iron, used in polishing glass, and also as a pigment; -- called also
crocus Martis .
Found on
http://www.encyclo.co.uk/webster/C/107
the brownish-red oxide of iron produced by heating ferrous sulfate: used chiefly as a pigment in paints and theatrical rouge, and as a polishing agent. Also called
Found on
https://www.infoplease.com/dictionary/colcothar
No exact match found.
