glair /ɡlɛə(ɹ)/noun 3verb 1forms 3 noun3 •Egg white, especially as used in various industrial preparations.If you beat an egg white until a froth forms on the surface, the clear liquid below the froth is glair. — 2021 •Any viscous, slimy substance.Some rain fell during the past few days but had little effect on the river which remains very low and full of glair. — 1962 •A broadsword fixed on a pike; a kind of halberd. verb1 •To smear with egg-white. formsglaired · glairing · glairs