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Biro™

noun
🔊/ˈbaɪrəʊ/
🔊/ˈbaɪrəʊ/
(plural Biros)
(British English)
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  1. a plastic pen with a metal ball at the top that rolls ink (= coloured liquid for writing, etc.) onto the paper 伯罗圆珠笔compare ballpoint
    Word Origin1940s: named after László József Bíró (1899–1985), Hungarian inventor of the ballpoint.