Glair (?), n. [F. glaire, glaire d'�uf, the glair of an egg, prob. fr. L. clarus clear, bright. See Clear, a.]
1. The white of egg. It is used as a size or a glaze in bookbinding, for pastry, etc.
2. Any viscous, transparent substance, resembling the white of an egg.
3. A broadsword fixed on a pike; a kind of halberd.