Why is the ninth month called September?
1814, Cologne water, loan-translation of French eau de Cologne, literally "water from Cologne," from the city in Germany (German Köln, from Latin Colonia Agrippina) where it was made, first by Italian chemist Johann Maria Farina, who had settled there in 1709.
in perfumery, scented solution usually consisting of alcohol and about 2-6 percent perfume concentrate. Originally, eau de cologne was a mixture of citrus oils from such fruits as lemons and oranges, combined with such substances as lavender and neroli (orange-flower oil); toilet waters were less-concentrated forms of other types of perfume. The two terms, cologne and toilet water, however, have come to be used interchangeably.