ballpoint pen

 

• ball-point pen

ballpoint pen (plural ballpoint pens)

1. A pen, similar in size and shape to a pencil, having an internal chamber filled with a viscous, quick-drying ink that is dispensed at the tip during use by the rolling action of a metal sphere (around 0.7 mm to 1 mm in diameter).

   Synonyms: ball pen, ballpen, (Britain, Australia, New Zealand) biro

• dip pen, nib pen; fountain pen; stylographic pen; gel pen

•   ballpoint pen on Wikipedia.Wikipedia
•   List of pen types, brands and companies on Wikipedia.Wikipedia