What is a snood?

[Eva Elisabeth]

I did an etymology check, too, as for the original meaning of the word:
"Old English snod 'ribbon for the hair,' from Proto-Germanic *snodo (cognates: Swedish snod 'string, cord'), from PIE root *(s)ne- 'to spin, sew' (cognates: Lettish snate 'a linen cover,' Old Irish snathe 'thread;' see needle (n.)). In the Middle Ages, typically worn by young unmarried girls, hence 'It was held to be emblematic of maidenhood or virginity' [Century Dictionary]. Modern fashion meaning 'bag-like hair net' first recorded 1938 (these also were worn by girls in the Middle Ages, but they are not snoods properly)."
http://www.etymonline.com/index.php?term=snood