SNOOD is a 5 letter word that starts with S.

1. \Snood\, n. [AS. sn[=o]d. Cf. Snare.]
   1. The fillet which binds the hair of a young unmarried
      woman, and is emblematic of her maiden character. [Scot.]
   
            And seldom was a snood amid Such wild, luxuriant
            ringlets hid.                         --Sir W.
                                                  Scott.
   
   2. A short line (often of horsehair) connecting a fishing
      line with the hook; a snell; a leader.
   
   

2. \Snood\, v. t.
   To bind or braid up, as the hair, with a snood. [Scot.]