This is the 405th most frequent Romanian word.
aia
The Romanian word "aia" means "that" (feminine singular).
In this sentence, 'aia' serves as a demonstrative pronoun, meaning 'that.' It refers to a specific object (the car).
Aia este mașina lui.
That is his car.
Here, 'aia' is used as a determinative adjective ('those'), modifying the noun 'prăjiturile' (cakes).
Îmi plac prăjiturile aia de acolo.
I like those cakes over there.
In this case, 'aia' is used colloquially as a pronoun to refer to a situation, idea, or thing previously mentioned or understood from context.