weekend – el fin de semana
(Pronounced feen-deh-seh-mah-nah)
To remember that weekend is pronounced feen-deh-seh-mah-nah (fin de semana) in Spanish, use the following mnemonic:
That weekend, despite a fiendish cold, he did the two-day seminar (fin de semana).
Fin de samana is masculine, so it's el fin de samana. Imagine an elephant going on a weekend break.