The conversation became cubical and coloured.
"The Orchard of Tears"
Sax Rohmer
Down this their captors shoved them till they reached a small cubical cell-windowless and without ventilation.
"The Boy Aviators in Africa"
Captain Wilbur Lawton
Hand-broken stone is generally more uniform in size, more nearly cubical in shape, and has sharper angles than that broken by machinery, but the latter, when properly assorted or screened, has been found to meet every requirement.
"The Future of Road-making in America"
Archer Butler Hulbert