I. floss 1 /flɒs $ flɑːs, flɒːs/ BrE AmE noun [uncountable]
[ Date: 1700-1800 ; Origin: Probably from Dutch vlos ]
1 . a type of thin thread that you use for cleaning between your teeth SYN dental floss
2 . a type of thin thread that you use for sewing
II. floss 2 BrE AmE verb [transitive]
to clean between your teeth using floss