a brand name for a type of marker pen with a thick point for writing or drawing

He took a Sharpie and wrote the word "freedom" on the page. 他拿起一支记号笔，在纸上写了“自由”这个词。

She gets asked for so many autographs that she brings her own Sharpie . 常常有人问她要签名，她就自己带了一支记号笔。