This is the 7th most frequent Romanian word.
o
The Romanian word "o" is the feminine singular definite article, meaning "the."
In this sentence, the word 'o' is a feminine singular indefinite article, equivalent to 'a' or 'an' in English.
Am văzut o pisică drăguță pe stradă.
I saw a cute cat on the street.
Here, 'o' is used as a direct object pronoun for feminine singular nouns, meaning 'her' in English.
O iubesc foarte mult pe sora mea.
I love my sister very much.
In this context, 'o să' is part of a future tense construction, used to express 'will' in English.