This is the 777th most frequent Portuguese word.
aquele
"That" (used to refer to something/someone distant from both the speaker and listener).
Here, 'aquele' modifies the noun 'prato' (dish), indicating a specific dish that is farther away.
Eu gostaria de experimentar aquele prato.
I would like to try that dish.
Here, 'aquele' is used to indicate a man at a distance, combined with 'ali' for emphasis on location.
Aquele homem ali é o novo vizinho.
That man over there is the new neighbor.
'Aquele' refers to a specific day in the past, making it clear in context which day is being discussed.