What is the correct German translation of "fan"?

The correct translation of "fan" in German is "Lüfter." This term specifically refers to a device that creates a flow of air, commonly used for cooling or ventilation. In technical contexts, "Lüfter" is often used to describe components in machinery, electronics, and HVAC systems.

The other choices have distinct meanings that do not relate to the concept of a fan. "Verkleidung" translates to "cladding" or "dressing," used in the context of covering structures or aesthetics. "Drain" in English refers to a system for removing water or liquid, and does not translate to a device that moves air. "Ablassen" means "to drain" or "to release," which again does not have any connection to the meaning of "fan." Understanding these distinctions helps clarify why "Lüfter" is the appropriate translation.