What is the meaning of Prosit?

Toast to indicate one is drinking to someone's, or to each other's, health.

to ask for

to beg

bless you! (said to someone who has just sneezed)

cheers (toast used when drinking in company)

third-person singular present active subjunctive of prōsum

well done, bravo

congratulations

bless you! exclamation said to someone who has just sneezed

bless you! exclamation said to someone who has just sneezed

bless you! (said to someone who has just sneezed)

Source: wiktionary.org