Learner's definition of FLOSS
[noncount]
2
: soft silk or cotton thread used for sewing(缝纫用的)丝线,棉线
2 floss /ˈflɑːs/ verb
flosses; flossed; flossing
flosses; flossed; flossing
Learner's definition of FLOSS
: to use dental floss to clean your teeth用牙线清洁牙齿 [no object]
[+ object]