rollerball
nounEtymology From roller + ball.
1
A kind of ballpoint pen with a spherical nib that uses water-based liquid or gelled ink.
- The office is full of rumpled clothes and bad haircuts; it’s an operation at which rollerball pens fall outside the budget limit (Bics for everyone!)2009 August 30, Laurie Winer, “Keeping Score”, in New York Times:
2
Computing, Engineering, Mathematics, Natural sciences, Physical sciences, Sciences A trackball.