This is the 632nd most frequent French word.
élu
"Elected" or "chosen."
Here, 'élu' is the past participle of the verb 'élire', used to indicate that the mayor was chosen through a vote.
Le maire a été élu hier.
The mayor was elected yesterday.
In this context, 'élu' is a noun meaning 'the chosen one', often used in a literary or spiritual sense.
Il est considéré comme l'élu de la prophétie.
He is considered the chosen one of the prophecy.
Here, 'élus' is the plural form of the noun referring to individuals who have been elected into a position by some selection process.