floss

nouns

a soft loosely twisted thread used in embroidery
floss
is derived from
flossy
is a type of (narrower)
a fine cord of twisted fibers (of cotton or silk or wool or nylon etc.) used in sewing and weaving
thread, yarn
a soft thread for cleaning the spaces between the teeth
dental floss, floss

verbs

use dental floss to clean
"floss your teeth after every meal"
floss
is a type of (narrower)
clean one's body or parts thereof, as by washing
"clean up before you see your grandparents"; "clean your fingernails before dinner"
clean, cleanse