clothing manufacturer trendy in the 1970s and 1980s, the company name was bought in 1930s from A.J. Izod, a London tailoring establishment. The surname (also Izzard, etc.) goes back to the Middle Ages and might be related to the proper name Isold.

old name for "Z," 1738, a variant of zed. The guess that it representes S-hard wants evidence.