glair, glaire, glaired, glairing. 1. The white of an egg. 2. A sizing, glazing, or adhesive substance made from egg white and used especially in bookbinding. 3. A viscous substance resembling egg white. 4. Any viscous transparent substance, resembling the white of an egg. 5. Etymology: from the 14th century via French from Latin clarus, 'clear'... Found on http://www.wordinfo.info/words/index/info/view_unit/488/2