Trademark.
- a brand name for a soft, disposable paper tissue, used especially as a handkerchief.
noun plural -ex or -exes
- trademark a kind of soft paper tissue, used esp as a handkerchief
1925, proprietary name, registered by Cellucotton Products Company, Neenah, Wisconsin, U.S.; later Kimberly-Clark Corp. An arbitrary alteration of clean + brand-name suffix -ex.