1. (

• anil ,
• indigo ,
• indigotin

) a blue dye obtained from plants or made synthetically ;

2. (

• indigo ,
• indigo_plant ,
• Indigofera_tinctoria

) deciduous subshrub of southeastern Asia having pinnate leaves and clusters of red or purple flowers; a source of indigo dye ;

3. (

• indigo

) a blue-violet color ;

1. (

• indigo

) having a color between blue and violet; "indigo flowers" ;