from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Calfskin treated with chromium salts and having square markings on the grain.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. black calfskin leather tanned with chromium salts
After Joseph Box, a 19th-century London bootmaker.(American Heritage® Dictionary of the English Language, Fourth Edition)