floss
Americannoun
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the cottony fiber yielded by the silk-cotton tree.
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silk filaments with little or no twist, used in weaving as brocade or in embroidery.
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any silky, filamentous matter, as the silk of corn.
verb (used without object)
verb (used with object)
noun
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the mass of fine silky fibres obtained from cotton and similar plants
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any similar fine silky material, such as the hairlike styles and stigmas of maize or the fibres prepared from silkworm cocoons
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untwisted silk thread used in embroidery, etc
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See dental floss
verb
Other Word Forms
Etymology
Origin of floss
1750–60; probably < French floche, as in soie floche floss silk, Old French flosche down, velvet pile (of uncertain origin)
Explanation
Floss is what you use to clean between your teeth. Dental floss is a strong, thick thread that can reach small pieces of food in tight spaces. Your dentist will be happy with you if you really do use floss every day — and to do this is to floss. Other types of floss are soft threads with different uses: some floss is made for stitching or embroidering designs on fabric, and the strands of silk spun by a silkworm are also floss. The origin of this word is uncertain, but one guess connects it to floche, "tuft of wool" in French.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
The inventor behind pricey yet sleekly designed vacuum cleaners, hair dryers and other household appliances is turning his focus to oral care with an AI-powered toothbrush that promises to floss teeth at the same time.
From The Wall Street Journal ● Sep. 9, 2026
The comparison becomes even more striking when measured against candy floss, which has a typical density of about 0.05 grams per cubic centimeter.
From Science Daily ● Jun. 27, 2026
Dances, for instance, may mimic animal behaviors, or reference popular moments from the series, such as getting grannies to floss.
From Los Angeles Times ● Mar. 22, 2026
The fabric pumpkins are then finished off with threaded floss and a fabric stem.
From Salon ● Oct. 30, 2025
For all they know, the floss could be a week old.
From "Water for Elephants" by Sara Gruen
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