| digoxin | (noun) digitalis preparation (trade name Lanoxin) used to treat congestive heart failure or cardiac arrhythmia; helps the heart beat more forcefully | Synonyms: Lanoxin |
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| indigo | (noun) a blue-violet color | - |
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| (noun) deciduous subshrub of southeastern Asia having pinnate leaves and clusters of red or purple flowers; a source of indigo dye | Synonyms: indigo plant, Indigofera tinctoria |
| (noun) a blue dye obtained from plants or made synthetically | Synonyms: anil, indigotin |
| indigotin | (noun) a blue dye obtained from plants or made synthetically | Synonyms: anil, indigo |
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