From Longman Dictionary of Contemporary Englishdress shirtˈdress shirt noun [countable] DCCa formal shirt, sometimes with a special decoration at the front, that a man wears under a dinner jacket
Examples from the Corpus
dress shirt• He wears a suit and a dress shirt without a tie, along with a straw hat that is out of style.• He threw my dress shirt over it so all was pale blue.• Zach put it on and when the jacket was done up it looked as if he was wearing a proper dress shirt.• For one thing, I forgot to turn off the iron and nearly burnt the Professor's dress shirt I was ironing.• Every day Mones came to class in a short-sleeved dress shirt and shiny black tie-up shoes.• He wore a short-sleeved dress shirt with the collar open and his necktie at half-mast. 