This is the 10615th most frequent Portuguese word.
furtado
"Furtado" means "stolen" in English.
Here, 'furtado' is used in a passive construct to indicate that an object ('carro') was unlawfully taken by someone.
Meu carro foi furtado ontem à noite.
My car was stolen last night.
In this sentence, 'furtado' is part of the verb phrase 'ter furtado', employed in a past action indicating theft performed by the subject ('ele').
Ele foi acusado de ter furtado dinheiro de sua empresa.
He was accused of having stolen money from his company.
'Furtada' acts as an adjective modifying 'obra de arte', describing its state as being stolen or unlawfully taken.