1. Level: This is the most common meaning of "nivel." It can refer to a physical level (e.g., the level of water in a glass), a level of skill or proficiency (e.g., a beginner level in Spanish), or a level of difficulty (e.g., a difficult level of a video game).
2. Floor: In some contexts, "nivel" can also refer to a floor in a building. For example, you might say "El ascensor va al tercer nivel" (The elevator goes to the third floor).
3. Standard: "Nivel" can also mean "standard" or "norm" in some contexts. For example, "Este producto no cumple con los niveles de calidad" (This product does not meet the quality standards).
To understand the exact meaning of "nivel," you need to consider the context of the sentence or phrase in which it appears.