The Collaborative International Dictionary of English v.0.48:

Flossy \Floss"y\ (?; 115), a.
   Pertaining to, made of, or resembling, floss; hence, light;
   downy.
   [1913 Webster]

WordNet (r) 3.0 (2006):

flossy
    adj 1: like down or as soft as down [syn: downy, downlike,
           flossy, fluffy]

Moby Thesaurus II by Grady Ward, 1.0:

47 Moby Thesaurus words for "flossy":
   ambitious, capillary, cirrose, cirrous, classy, downy, fancy,
   feathery, fibered, fibroid, fibrous, flagelliform, fleecy, fluffy,
   funicular, furry, fuzzy, gossamery, hairlike, hairy, high-flown,
   high-flying, high-toned, highfalutin, highfaluting, hirsute,
   lanate, ligamental, lofty, nappy, ostentatious, peachy, pinnate,
   pretentious, pubescent, ropy, silky, stringy, taeniate, taeniform,
   threadlike, thready, tony, vaunting, velvety, wiry, woolly