box calf definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
tanned calf leather with square markings
box calf definition by American Heritage Dictionary
Calfskin treated with chromium salts and having square markings on the grain.
Origin: After Joseph Box, a 19th-century London bootmaker.