rollerball

宝珠笔；签字笔

词形变化

rollerballs 复数 rollerballs

释义与例句

n.
  1. 1.

    A kind of ballpoint pen with a spherical nib that uses water-based liquid or gelled ink.

  2. 2.

    A trackball.

    计算机 工程 数学

词源

From roller + ball.

来源：wiktionary