floss

floss
noun
[mass noun]
  1. the rough silk enveloping a silkworm's cocoon
    (蚕茧外的)乱丝,绪丝
    ■(亦作 floss silk)untwisted silk fibres used in embroidery
    (未捻的)绣花丝线
    ■the silky down in maize and other plants
    (玉米等植物的)黍须,绒毛
    milkweed floss.
    马利筋的绒毛。
  2. short for dental floss
    dental floss 的简称
verb
  1. [with obj.]clean between (one's teeth) with dental floss
    用牙线清洁(牙缝)
    I flossed my teeth.
    我用牙线清洁牙齿。
    [no obj.]you must floss well.
    你必须好好用牙线清洁牙齿。
语源
  1. mid 18th cent.: from French (soie) floche 'floss (silk'), from Old French flosche 'down, nap of velvet', of unknown origin
英语宝典
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