This is the 680th most frequent Portuguese word.
cruzeiro
The Portuguese word "cruzeiro" can mean: 1) a type of currency previously used in Brazil, 2) a cross-shaped monument, or 3) a cruise (maritime vacation).
In this sentence, 'cruzeiro' refers to a nautical journey or holiday on a cruise ship.
Eu fui em um cruzeiro pelo Caribe durante as férias.
I went on a cruise through the Caribbean during the vacation.
Here, 'cruzeiro' is part of the term 'cruzeiro do sul', referring to the Southern Cross constellation.
O cruzeiro do sul é uma constelação visível no hemisfério sul.
The Southern Cross is a constellation visible in the Southern Hemisphere.
In this context, 'cruzeiro' represents the Brazilian currency used during a certain period in history.