glair (n.)youdaoicibaDictYouDict[glair 词源字典]
white of an egg (used as a varnish), c. 1300, from Old French glaire "white of egg, slime, mucus" (12c.), from Vulgar Latin *claria (ovi) "white part (of an egg)," from Latin clarus "bright, clear" (see clear (adj.)). Related: Glaireous.[glair etymology, glair origin, 英语词源]