a man's shirt worn for formal or semiformal evening dress, usually having French cuffs and a stiff or pleated front to be fastened with studs.
a man's shirt, buttoning down the front and typically having long sleeves with barrel or French cuffs, and a soft or starched collar, worn with a necktie.
a man's shirt, usually white, worn as part of formal evening dress, usually having a stiffened or decorative front
Collins English Dictionary - Complete & Unabridged 10th Edition
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