baja

noun

1. a narrow peninsula in NW Mexico between the Gulf of California and the Pacific, forming two territories of Mexico. 55,634 sq. mi. (144,090 sq. km). Capitals: Mexicali (Northern Territory) and La Paz (Southern Territory).

noun

1. the Spanish name for Lower California
2. short for Baja California Norte

in place names, Spanish baja, literally “lower,” either in elevation or geography; cf. Baja California.