This is the 4909th most frequent Spanish word.
diana
Target or bullseye.
In this sentence, "diana" refers to the target in archery or similar aiming competitions.
La diana es el objetivo principal en una competencia de tiro con arco.
The target is the main objective in an archery competition.
Here, "diana" is used colloquially to mean a precise time or the start of the day.
La reunión comenzará a la diana en punto.
The meeting will start at exactly the crack of dawn.
In this case, "diana" metaphorically refers to hitting the central point or achieving accuracy or suitability in the context discussed.