Danube (a river in central and eastern Europe)
Learned borrowing from Latin Dānubius, from Proto-Celtic *Dānowyos, an extended form of the river-name *Dānu, from Proto-Indo-European *déh₂nu (“river goddess”), akin to *dʰenh₂- (“to set in motion; to flow”).
Practice speaking and memorizing "Danúbio" and many other words and sentences in Portuguese.