This is the 497th most frequent Italian word.
dà
The Italian word "dà" means "gives" (third person singular of "dare").
The word 'dà' here is a third-person singular present tense form of the verb 'dare', meaning 'to give'.
Luisa dà il libro a Marco.
Luisa gives the book to Marco.
In this sentence, 'dà' refers to assigning or attributing importance, again from the verb 'dare'.
Il professore dà molta importanza agli esercizi.
The professor places a lot of importance on the exercises.
Here, 'dà' is used to describe emitting or producing, a figurative extension of the verb 'dare'.