An untwilled woolen fabric, very soft, fine, and thin, used by women for veils, and also for dresses, etc.(noun)
The Century Dictionary (Public Domain)
Use "nun's-veiling" in a sentence
"Ellen is busy making a pale blue nun's-veiling blouse for Emma Hagan."
"This fashion is very much objected to by doctors, who think many diseases of the eye come by this means, and advise for common use thin nun's-veiling instead of crape, which sheds its pernicious dye into the sensitive nostrils, producing catarrhal disease as well as blindness and cataract of the eye."
"He called fine white satin ` white nun's-veiling, 'and he left out things."