What does the word "tornado" mean in Spanish?

The correct answer, "to turn," captures the essence of the word "tornado" in Spanish, which originates from the verb "tornar." In English, a tornado is characterized by its spinning motion as it moves and forms, which relates closely to the concept of turning. This motion is a defining feature of a tornado, making the translation apt.

The other options—while they encompass elements of movement—do not align as precisely with the root meaning of "tornado" in this context. "To spin," "to whirl," and "to twist" emphasize other aspects of rotational movement but do not convey the broader concept of turning that is inherent in the term "tornado." This distinction makes "to turn" the most relevant translation.