Definition of "cologne"

A type of perfume consisting of 2-5% essential oils, 70-90% alcohol and water.  quotations  examples

Any of a family of fresh, citrus-based fragrances distilled using extracts from citrus, floral, and woody ingredients, said to have been developed in the early 18th century in Cologne, Germany.  examples

(loosely) A fragrance typically worn by a man as opposed to a woman, regardless of its concentration.  examples