This is the 26th most frequent Croatian word.
ga
"Ga" is a Croatian pronoun meaning "him" or "it" (masculine, accusative case).
The word "ga" functions as a direct object pronoun (him) referring to a previously mentioned or implied male entity.
Vidim ga na ulici.
I see him on the street.
The word "ga" acts as a direct object pronoun (it) referring to a specific masculine item that was brought.
Donio sam ga iz trgovine.
I brought it from the store.
The word "ga" here is a direct object pronoun (him), again referring to a male entity who was expected to be found.