Webster's English Dictionary

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aniline

an.i.line \'an-*l-*n\ n [G anilin, fr. anil indigo, fr. F, fr. Pg, fr. Ar 
   an-ni-l]the indigo plant, fr. Skt ni-li- indigo, fr. fem. of ni-la dark 
   blue : an oily liquid poisonous amine C6H5NH2 obtained esp. b y the 
   reduction of nitrobenzene and used chiefly in organic synthesis (as of 
   dyes)