An Eton collar, also known as a wing collar, is a type of formal collar that was traditionally worn with a formal jacket or tailcoat. There are several synonyms for the Eton collar, including wingtip collar, address collar, and plain collar. The wingtip collar gets its name from its pointed edges that resemble wings, while the address collar is a simpler version with a rounded edge. The plain collar is the most versatile of the three, with a simple design that can be worn with a variety of styles. Regardless of the name, the Eton collar remains a classic accessory for formal attire and adds a touch of elegance to any occasion.