noun
marking pen; marker pen; felt-tip pen
A pen with a felt tip used for writing or drawing, often with permanent or semi-permanent ink. Synonymous with マーカー in this sense.
See also: マーカー
ホワイトボードにはマーキングペンを使ってください。
Please use a marking pen for the whiteboard.
This marking pen doesn't come off easily even when used on fabric.