This is the 758th most frequent Portuguese word.
sangue
Blood.
The word 'sangue' is used here as a noun representing the essential fluid circulating in the body.
O sangue é vital para o corpo humano.
Blood is vital for the human body.
In this sentence, 'sangue' refers metaphorically to ancestry or lineage.
Ele tem sangue italiano em suas veias.
He has Italian blood in his veins.
Here, 'sangue frio' is an idiomatic expression indicating composure or the ability to stay calm under pressure.