名詞 ballpoint:

1. a pen that has a small metal ball as the point of transfer of ink to paper
   同義詞：ballpoint pen, ballpen, Biro

1. The boys were bickering over some ballpoints.
   那些男孩子為幾支圓珠筆而爭吵起來了。
2. Can you give me two refill of each color for the ballpoint pen?
   能不能請價錢給這支圓珠筆每種顏色配兩根替換筆芯？

ball.point

n.（名詞）
A pen having as its writing point a small ball bearing that transfers ink stored in a cartridge onto a writing surface.
圓珠尖,球尖：有一小滾珠做為書寫點的筆，可將貯存于筆管中的墨水傳送到書寫面上