dress shirt → πουκάμισο καλόA shirt, button shirt, dress shirt, button-front, button-front shirt, button-down, button-down shirt, or button-up shirt is a garment with a collar, and a full-length opening at the front from the collar to the hem.
In British English, dress shirt means specifically the more formal evening garment worn with black- or white- tie, also discussed below. Some of these formal shirts have stiff fronts and detachable collars attached with collar studs.
https://en.wikipedia.org/wiki/Dress_shirt