noun
biro
BEYE-roh
noun
1
A ballpoint pen, especially in British English, from the original brand name.
"He signed the form with a chewed-up blue biro."
"She always keeps a spare biro in her bag."
How to Use Biro
Learner’s notesIn plain EnglishA common British word for an ordinary ballpoint pen.
UK vs US
Mainly British; Americans just say "ballpoint pen" or "pen".
Word Forms
biros plural, Biros plural
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He signed the form with a chewed-up blue _____.
Etymology
From the trademark Biro, named after László Bíró, the Hungarian-born inventor who patented the modern ballpoint pen in the late 1930s.