From Longman Dictionary of Contemporary Englishpolo shirtˈpolo shirt noun [countable] DCCa shirt with a collar and a few buttons near the neck, that is pulled on over the head
Examples from the Corpus
polo shirt• During her absence Nathan had showered and changed into fawn trousers and a pale blue polo shirt.• Wearing her navy shorts and a jade-green polo shirt, she felt cool and fresh.• Gary wears regulation Levi 501 jeans and a Ralph Lauren polo shirt.• The swine looked even more attractive than ever in a black open-necked polo shirt and black jeans.• Right Long-sleeve polo shirt, £16.99; trousers, fencer's own.• Or buy a tailored polo shirt that fits?• He was wearing a blue blazer and a white polo shirt. 