pen

a ballpoint pen.圆珠笔

a felt-tip pen.毡头笔

a pen and ink drawing.钢笔画

pen and ink,笔墨；钢笔画；写作

put pen to paper,开始写；落笔

pen pal,笔友（等于pen friend）

ball pen,圆珠笔

fountain pen,n. 钢笔

ball-point pen,n. 圆珠笔

pen name,笔名；[俚]囚犯的号码

pen friend,笔友；通信朋友

ballpoint pen,n. 原子笔，圆珠笔

pen holder,钢笔杆；笔座

light pen,光笔（等于light pencil）

pen tool,钢笔工具

brush pen,n. 毛笔

pen point,笔尖

gel pen,中性笔

marker pen,标记笔