This is the 253rd most frequent Vietnamese word.
bắc
"North."
Here, 'bắc' means to build or construct something spanning across, such as a bridge.
Tôi sẽ đi bắc cầu qua sông.
I will build a bridge over the river.
In this case, 'Bắc' refers to the direction 'north' or the northern part of a country.
Anh ấy học ở miền Bắc của Việt Nam.
He studies in the northern region of Vietnam.
Here, 'bắc' stands for the cardinal direction 'north'.