This is the 393rd most frequent Italian word.
scorsa
"Scorsa" means "last" or "past" when referring to time (e.g., last week).
In this sentence, 'scorsa' is the feminine past participle of the verb 'scorrere,' used here as an adjective to modify 'settimana,' meaning 'last' as in the previous week.
La settimana scorsa sono andato al mare.
Last week, I went to the beach.
In this example, 'scorsa' works as an adjective modifying 'volta,' meaning 'last' or referring to the prior occasion.
La scorsa volta ci siamo divertiti molto con gli amici.
Last time, we had a lot of fun with friends.
Here, 'scorsa' is a noun deriving from the verb 'scorrere,' referring to a quick overview or glance, used in a figurative sense.