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1. Oxford American Dictionary

   rollerball

   • IPA[ˈrōlərˌbôl]

   美式

   • n.
     a ballpoint pen using thinner ink than other ballpoints.；an input device containing a ball which is moved with the fingers to control the cursor.

   • noun: rollerball, plural noun: rollerballs

2. • 更多解釋

   rollerball

   • IPA[ˈrəʊləbɔːl]

   英式

   • n.
     a ballpoint pen using thinner ink than other ballpoints.

   Oxford Dictionary