sierra /siˈɛɹə/ noun4 •A rugged range of mountains. •Alternative letter-case form of Sierra from the NATO/ICAO Phonetic Alphabet. •A scombroid fish. •A relatively low-quality grade of Spanish saffron. formssierras
Sierra noun1 •(US) Ellipsis of Sierra Nevada: a mountain range in the Western United States.I am going to the Sierra next weekend.