1. : a man's stand-up collar having the upper corners turned down to form wings and worn especially for formal dress
2. : a woman's folding or spreading collar with pointed corners
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noun, pl ⋯ -lar [count]
chiefly Brit : a type of high, stiff shirt collar that has the top corners turned down and that is worn by a man on formal occasions
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a high stiff shirt ↑collar for men, worn with formal clothes
Useful english dictionary. 2012.