The Collaborative International Dictionary of English v.0.48:

Burnet \Bur"net\, n. [OE. burnet burnet; also, brownish (the
   plant perh. being named from its color), fr. F. brunet, dim.
   of brun brown; cf. OF. brunete a sort of flower. See
   Brunette.] (Bot.)
   A genus of perennial herbs (Poterium); especially,
   Poterium Sanguisorba, the common, or garden, burnet.
   [1913 Webster]

   Burnet moth (Zool.), in England, a handsome moth
      (Zyg[ae]na filipendula), with crimson spots on the
      wings.

   Burnet saxifrage. (Bot.) See Saxifrage.

   Canadian burnet, a marsh plant (Poterium Canadensis).

   Great burnet, Wild burnet, Poterium oficinalis (or
      Sanguisorba oficinalis).
      [1913 Webster]

U.S. Gazetteer Counties (2000):

Burnet -- U.S. County in Texas
   Population (2000):    34147
   Housing Units (2000): 15933
   Land area (2000):     996.035185 sq. miles (2579.719178 sq. km)
   Water area (2000):    24.928443 sq. miles (64.564368 sq. km)
   Total area (2000):    1020.963628 sq. miles (2644.283546 sq. km)
   Located within:       Texas (TX), FIPS 48
   Location:             30.717671 N, 98.224509 W
   Headwords:
    Burnet
    Burnet, TX
    Burnet County
    Burnet County, TX


U.S. Gazetteer Places (2000):

Burnet, TX -- U.S. city in Texas
   Population (2000):    4735
   Housing Units (2000): 1813
   Land area (2000):     6.831944 sq. miles (17.694652 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    6.831944 sq. miles (17.694652 sq. km)
   FIPS code:            11464
   Located within:       Texas (TX), FIPS 48
   Location:             30.758991 N, 98.226254 W
   ZIP Codes (1990):     78611
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Burnet, TX
    Burnet