Saw-toothed mountain range
A modern phonetic spelling of Sierra, which is the Spanish word for a mountain range with jagged peaks. It evokes the rugged beauty of the Sierra Nevada mountains in the Western United States.
Less common today
Sierah isn't in the latest US Top 1000. It last peaked at #5,266 in 1996.
US births per 5-year period, 1990βpresent (SSA data).