The Collaborative International Dictionary of English v.0.48:

Shasta \Shas"ta\, n.
   A mountain peak, etc., in California.
   [Webster 1913 Suppl.]

WordNet (r) 3.0 (2006):

Shasta
    n 1: a member of the Indian people of northern California and
         southern Oregon
    2: a volcanic mountain peak in the Cascade Range in northern
       California (14,162 feet high) [syn: Shasta, Mount Shasta]
    3: the Shastan language spoken by the Shasta

U.S. Gazetteer Counties (2000):

Shasta -- U.S. County in California
   Population (2000):    163256
   Housing Units (2000): 68810
   Land area (2000):     3785.194722 sq. miles (9803.608907 sq. km)
   Water area (2000):    62.240980 sq. miles (161.203391 sq. km)
   Total area (2000):    3847.435702 sq. miles (9964.812298 sq. km)
   Located within:       California (CA), FIPS 06
   Location:             40.688705 N, 122.121202 W
   Headwords:
    Shasta
    Shasta, CA
    Shasta County
    Shasta County, CA