The Collaborative International Dictionary
Cornerwise
Cornerwise \Cor"ner*wise`\ (-w?z`), adv. With the corner in front; diagonally; not square.
Wiktionary
cornerwise
adv. diagonally.
Usage examples of "cornerwise".
In his haste he jammed some in cornerwise, so that not all of them would fit.
Working purely by feel, he folded his handkerchief cornerwise, adjusted the straight edge to a point just below his eyes and knotted the handkerchief behind the back of his head.