The Collaborative International Dictionary of English v.0.48:

Rosebud \Rose"bud`\, n.
   The flower of a rose before it opens, or when but partially
   open.
   [1913 Webster]

WordNet (r) 3.0 (2006):

rosebud
    n 1: the bud of a rose
    2: (a literary reference to) a pretty young girl

U.S. Gazetteer Counties (2000):

Rosebud -- U.S. County in Montana
   Population (2000):    9383
   Housing Units (2000): 3912
   Land area (2000):     5012.367931 sq. miles (12981.972794 sq. km)
   Water area (2000):    14.568806 sq. miles (37.733032 sq. km)
   Total area (2000):    5026.936737 sq. miles (13019.705826 sq. km)
   Located within:       Montana (MT), FIPS 30
   Location:             45.973910 N, 106.654466 W
   Headwords:
    Rosebud
    Rosebud, MT
    Rosebud County
    Rosebud County, MT


U.S. Gazetteer Places (2000):

Rosebud, MO -- U.S. city in Missouri
   Population (2000):    364
   Housing Units (2000): 165
   Land area (2000):     0.325183 sq. miles (0.842220 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    0.325183 sq. miles (0.842220 sq. km)
   FIPS code:            63110
   Located within:       Missouri (MO), FIPS 29
   Location:             38.386579 N, 91.401899 W
   ZIP Codes (1990):     63091
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Rosebud, MO
    Rosebud


U.S. Gazetteer Places (2000):

Rosebud, SD -- U.S. Census Designated Place in South Dakota
   Population (2000):    1557
   Housing Units (2000): 465
   Land area (2000):     13.077472 sq. miles (33.870496 sq. km)
   Water area (2000):    0.041177 sq. miles (0.106648 sq. km)
   Total area (2000):    13.118649 sq. miles (33.977144 sq. km)
   FIPS code:            55940
   Located within:       South Dakota (SD), FIPS 46
   Location:             43.241117 N, 100.851851 W
   ZIP Codes (1990):
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Rosebud, SD
    Rosebud


U.S. Gazetteer Places (2000):

Rosebud, TX -- U.S. city in Texas
   Population (2000):    1493
   Housing Units (2000): 673
   Land area (2000):     0.777928 sq. miles (2.014825 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    0.777928 sq. miles (2.014825 sq. km)
   FIPS code:            63188
   Located within:       Texas (TX), FIPS 48
   Location:             31.075209 N, 96.975581 W
   ZIP Codes (1990):     76570
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Rosebud, TX
    Rosebud