A type of marker pen with a very fine point, used for writing or drawing.
A sharpy is a useful tool for drawing and writing neatly.
Examples:
I used a sharpy to write my name.
She drew a picture with a sharpy.
The teacher used a sharpy to write on the whiteboard.
I love using my sharpy to draw rainbows.
I have a special gold sharpy for drawing stars.
The artist always carries a sharpy in her pocket.