magenta (Adjective) — Of deep purplish red.
magenta (Noun) — A battle in 1859 in which the French and Sardinian forces under Napoleon III defeated the Austrians under Francis Joseph I.
magenta (Noun) — A primary subtractive colour for light; a dark purple-red colour; the dye for magenta was discovered in 1859, the year of the battle of Magenta.