Skip to definition.  Noun: sierra  see'e-ru   1. A range of
mountains (usually with jagged peaks and irregular outline)   2.
A Spanish mackerel of western North America     - Scomberomorus
sierra  Derived forms: sierras  Type of: chain, chain of
mountains, mountain chain, mountain range, range, range of
mountains, Spanish mackerel  Encyclopedia: Sierra, Abangares