The Collaborative International Dictionary of English v.0.48:

Gilbert \Gilbert\ prop. n.
   William Schwenk Gilbert, an English dramatist born at London
   Nov. 18, 1836. He is most famous for his collaborations with
   Sir Arthur Sullivan on a number of humorous light operas
   which are known as "Gilbert and Sullivan Operas". His first
   play was "Dulcamara" (1866). He also wrote "The Palace of
   Truth" (1870), "Pygmalion and Galatea" (1871), "Sweethearts"
   (1874), "Engaged" (1877), "The Mountebanks" (1891), and in
   collaboration with Sir A. Sullivan (who wrote the music), he
   wrote "The Sorcerer" (1877), "H. M. S. Pinafore" (1878), "The
   Pirates of Penzance" (1879), "Patience" (1881), "Iolanthe"
   (1883), "The Mikado" (1885), "Ruddygore" (1887), "The Yeomen
   of the Guard" (1888), "The Gondoliers" (1889), and "Utopia,
   limited" (1893). The light operas proved very popular and
   continue to be performed over one hundred years later. He
   also published other works.
   [Century Dict. 1906 +PJC]

WordNet (r) 3.0 (2006):

gilbert
    n 1: a unit of magnetomotive force equal to 0.7958 ampere-turns
         [syn: gilbert, Gb, Gi]
    2: a librettist who was a collaborator with Sir Arthur Sullivan
       in a famous series of comic operettas (1836-1911) [syn:
       Gilbert, William Gilbert, William S. Gilbert, William
       Schwenk Gilbert, Sir William Gilbert]
    3: English court physician noted for his studies of terrestrial
       magnetism (1540-1603) [syn: Gilbert, William Gilbert]
    4: English navigator who in 1583 established in Newfoundland the
       first English colony in North America (1539-1583) [syn:
       Gilbert, Humphrey Gilbert, Sir Humphrey Gilbert]
    5: United States architect who influenced the development of the
       skyscraper (1859-1934) [syn: Gilbert, Cass Gilbert]

U.S. Gazetteer Places (2000):

Gilbert, AZ -- U.S. town in Arizona
   Population (2000):    109697
   Housing Units (2000): 37007
   Land area (2000):     42.956638 sq. miles (111.257178 sq. km)
   Water area (2000):    0.239864 sq. miles (0.621246 sq. km)
   Total area (2000):    43.196502 sq. miles (111.878424 sq. km)
   FIPS code:            27400
   Located within:       Arizona (AZ), FIPS 04
   Location:             33.344439 N, 111.762411 W
   ZIP Codes (1990):     85234
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Gilbert, AZ
    Gilbert


U.S. Gazetteer Places (2000):

Gilbert, AR -- U.S. town in Arkansas
   Population (2000):    33
   Housing Units (2000): 29
   Land area (2000):     0.313892 sq. miles (0.812976 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    0.313892 sq. miles (0.812976 sq. km)
   FIPS code:            26800
   Located within:       Arkansas (AR), FIPS 05
   Location:             35.991004 N, 92.716237 W
   ZIP Codes (1990):
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Gilbert, AR
    Gilbert


U.S. Gazetteer Places (2000):

Gilbert, IA -- U.S. city in Iowa
   Population (2000):    987
   Housing Units (2000): 347
   Land area (2000):     0.825520 sq. miles (2.138087 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    0.825520 sq. miles (2.138087 sq. km)
   FIPS code:            30630
   Located within:       Iowa (IA), FIPS 19
   Location:             42.105858 N, 93.645185 W
   ZIP Codes (1990):
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Gilbert, IA
    Gilbert


U.S. Gazetteer Places (2000):

Gilbert, SC -- U.S. town in South Carolina
   Population (2000):    500
   Housing Units (2000): 195
   Land area (2000):     2.265512 sq. miles (5.867648 sq. km)
   Water area (2000):    0.062235 sq. miles (0.161188 sq. km)
   Total area (2000):    2.327747 sq. miles (6.028836 sq. km)
   FIPS code:            29050
   Located within:       South Carolina (SC), FIPS 45
   Location:             33.925492 N, 81.394531 W
   ZIP Codes (1990):     29054
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Gilbert, SC
    Gilbert


U.S. Gazetteer Places (2000):

Gilbert, LA -- U.S. village in Louisiana
   Population (2000):    561
   Housing Units (2000): 231
   Land area (2000):     0.978125 sq. miles (2.533331 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    0.978125 sq. miles (2.533331 sq. km)
   FIPS code:            28940
   Located within:       Louisiana (LA), FIPS 22
   Location:             32.049677 N, 91.660109 W
   ZIP Codes (1990):     71336
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Gilbert, LA
    Gilbert


U.S. Gazetteer Places (2000):

Gilbert, MN -- U.S. city in Minnesota
   Population (2000):    1847
   Housing Units (2000): 900
   Land area (2000):     11.790524 sq. miles (30.537315 sq. km)
   Water area (2000):    0.791998 sq. miles (2.051266 sq. km)
   Total area (2000):    12.582522 sq. miles (32.588581 sq. km)
   FIPS code:            23714
   Located within:       Minnesota (MN), FIPS 27
   Location:             47.484711 N, 92.466221 W
   ZIP Codes (1990):     55741
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Gilbert, MN
    Gilbert


U.S. Gazetteer Places (2000):

Gilbert, WV -- U.S. town in West Virginia
   Population (2000):    417
   Housing Units (2000): 227
   Land area (2000):     1.023101 sq. miles (2.649820 sq. km)
   Water area (2000):    0.066622 sq. miles (0.172551 sq. km)
   Total area (2000):    1.089723 sq. miles (2.822371 sq. km)
   FIPS code:            30772
   Located within:       West Virginia (WV), FIPS 54
   Location:             37.614497 N, 81.867212 W
   ZIP Codes (1990):     25621
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Gilbert, WV
    Gilbert