Definition of glair in English:

glair

Pronunciation /ɡler/ /ɡlɛr/

noun

  • 1A preparation made from egg white, used especially as an adhesive for bookbinding and gilding.

    ‘Whatever pigments were selected or manufactured for use, the binding medium with which they were incorporated was either glair or a solution of gum.’
    • ‘This glair was also commonly used as a binder for pigments used in medieval illumination.’
    • ‘Make your own glair using ingredients such as egg, water, sugar and gum arabic.’
    adhesive, fixative, gum, paste, cement
    1. 1.1dated Egg white.

Origin

Middle English from Old French glaire, based on Latin clara, feminine of clarus ‘clear’.