The wind here is a whole concept, so the horizontal movement in the definition is also viewed from a macro perspective. Of course, the wind is not horizontal everywhere in details, but the general direction is horizontal.
Air moving vertically in the general direction is not called wind, but called airflow, such as updraft and downdraft.
The "wind" produced by electric fans is artificial airflow, which belongs to the extension of the concept of natural wind, and is also called wind, but it should be distinguished from natural wind when studying and studying.
What we want to learn in science class is science. In the style of study, the study of wind is the cause of wind in nature and the law of wind movement. The wind blown by the electric fan is artificially generated. As long as the electric fan is turned on, it will blow in the direction that people tell it to blow, so the wind blown by the electric fan is not what we need to learn. We will learn the working principle of electric fans in the future, which is our science.