"green indigo" meaning in English

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  "pos": "noun",
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          "text": "The green indigo brought over from India in 1790, by Prinsep, appears to have been, according to the statements and researches of Bancroft, a substance analogous to chlorophyl, soluble in alcohol, and mixed with some ordinary indigo.",
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        "(idiomatic) Synonym of lokao"
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  "word": "green indigo"
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  "lang_code": "en",
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        "(idiomatic) Synonym of lokao"
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