from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A dark blue dyestuff, the first to be commercially produced.

from the GNU version of the Collaborative International Dictionary of English

  • n. A dark blue substance obtained from wood tar. It consists of hydrocarbons which when oxidized form the orange-yellow eupittonic compounds, the salts of which are dark blue.

from The Century Dictionary and Cyclopedia

  • n. A blue substance used in dyeing, originally produced from the tar of beech-wood.


Ancient Greek pitch + beautiful: compare French pittacale. (Wiktionary)



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