Webster's English Dictionary

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tincture

1. tinc.ture \'tin(k)-ch*r\ n [ME, fr. L tinctura act of dyeing, fr. 
   tinctus, pp. of tingereX to tinge 1a: a substance that colors, dyes, or 
   stains  1b: COLOR, TINT  2a: a characteristic quality : CAST  2b: a slight 
   admixture : TRACE  obs  3: an active principle or extract  4: a heraldic 
   metal, color, or fur  5: a solution of a medicinal substance in an 
   alcoholic menstruum 
2. tincture \'tin(k)-ch*-rin, -shrin\ vt or tinc.tur.ing 1: to tint or 
   stain with a color : TINGE  2: to infuse or instill with a property or 
   entity : IMPREGNATE