millinery means: The art and manufacture of hats, and other headwear is called millinery. Historic milliners would produce everything, from shifts and shirts to neckerchiefs and caps for men and women. This term is derived from the Middle Ages when Mileners were recited to Milanese — the center of fashion and textiles trading. While millinery has changed over time, it is still very popular today with many different uniforms and events. Hats are often used to indicate social status. This could be a Stetson for a cowboy, the top hat of a man, or cocktail fascinators that ladies wear at races. (in Fashion Dictionary)

What else does millinery mean?

A milliner sells articles, particularly women’s hats. (in Merlin Dictionary)

A milliner is a person or company that does business in the field of millinery. (in Merlin Dictionary)