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optical flint

n.
1.optical glass of high dispersion and high refractive index

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    Idiom of the Day

    lead (someone) by the nose
    to have full control of someone, to make or persuade someone to do what you want
    The man is not very aggressive and lets his boss lead him by the nose.



    1.
    A whole generation of infants is at risk of ...... diseases due to drinking poisonous milk being pumped into the market by ...... traders.

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