This is the 2011th most frequent Portuguese word.
barulho
Noise.
In this sentence, 'barulho' means 'noise' and refers to any sound that stands out or seems unusual.
Ouvi um barulho estranho vindo do porão.
I heard a strange noise coming from the basement.
Here, 'barulho' refers to the environmentally intrusive sound from construction activities.
O barulho da construção está muito alto hoje.
The noise from the construction is very loud today.
In this context, 'barulho' describes the pleasant and natural sound produced by ocean waves.