biro

noun3

1. •
   A Biro brand ballpoint pen.

   • Frank's Biro taps delicately at the topmost of the little yellow notes. — 1993
2. •
   (UK, Commonwealth) Any ballpoint pen.

   • Massimo's finger was poised above red on his multi-coloured biro like a kangaroo frozen in headlights. — 2007
3. •
   Ink from a ballpoint pen.