The Collaborative International Dictionary
Guiac
Guiac \Gui"ac\, n. Same as Guaiac.
Wiktionary
guiac
n. (alternative form of guaiac English)
Usage examples of "guiac".
The sulphur of Mount Vesuvius proves invincibly that the banks of the Rhine, Danube, Ganges, Nile and the great Yellow River are merely sulphur, nitre and Guiac oil, which only await the moment of the explosion to reduce the earth to ashes, as it has already been.