rail – el ferrocarril
(Pronounced feh-rroh-kah-rreel)
To remember that rail is pronounced feh-rroh-kah-rreel (ferrocarril) in Spanish, use the following mnemonic:
Travelling by rail, the ferocious carnivore made a really (ferrocarril) short meal of all its fellow passengers.
Ferrocarril is masculine, so it's el ferrocarril. Imagine an elephant tied to the rail as a train approaches.