'Biro' definitions:

Definition of 'Biro'

From: WordNet
noun
A pen that has a small metal ball as the point of transfer of ink to paper [syn: ballpoint, ballpoint pen, ballpen, Biro]

Definition of 'Biro'

From: GCIDE
  • Biro \Biro\ n. [from the name of the inventor.] a pen with small metal ball as point of transfer of ink to paper; same as ballpoint pen.
  • Syn: ballpoint, ballpoint pen, ballpen. [WordNet 1.5] Birostrate