floss
Word family nounflossingflossadjectiveflossy
floss1 /flɒs $ flɑːs, flɒːs/ noun [uncountableU] 2. DCa type of thin thread that you use for sewing 〔缝纫用的〕(绣花)丝线 floss2 verb [transitiveT] MHto clean between your teeth using floss 用牙线清洁〔牙缝〕 floss• Do this for five minutes twice a day, then floss.• He's trying to floss his teeth now. Origin floss1 (1700-1800) Probably from Dutch vlos