Short answer:
marker means "Marker pen", which is transliterated from English "marker pen" or "marker".
See the picture below for the specific items:
Related knowledge:
1. Marker, also known as marker, is characterized by its ability to draw and write well on most materials, and it can be dried quickly, leaving a reliable and definite mark. For example, marks and characters can be marked on the surface of glass, wood and metal.
2. Generally, the handwriting is thicker than the pen we usually use for writing. Because the built-in ink uses paint pigments, the pen head is generally made of soft water-absorbing and oil-absorbing materials.
3. What looks like a marker pen is a whiteboard pen. The biggest difference between marker pen and whiteboard pen is that the handwriting left by marker pen is relatively difficult to erase, while whiteboard pen requires easy erasing. Whiteboard pens are generally used for teaching whiteboard writing (teachers write and explain on the whiteboard in class) or temporary marking, while marker pens are used for reliable long-term marking.