This is the 534th most frequent Italian word.
ovvero
"Ovvero" means "or rather" or "that is to say."
Here, 'ovvero' serves to clarify the time frame for better understanding.
La lezione inizierà alle 9, ovvero fra un'ora.
The class will start at 9, that is, in an hour.
'Ovvero' is used to offer bracketed options, providing further detail to the word 'movie'.
Puoi scegliere di vedere un film, ovvero una commedia o un dramma.
You can choose to watch a movie, that is, a comedy or a drama.
In this sentence, 'ovvero' is used to specify or clarify the prior statement, giving a more exact explanation.