The Collaborative International Dictionary of English v.0.48:

Bonnie \Bon"nie\ (b[o^]n"n[y^]), a. [Scot.]
   See Bonny, a.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Bonny \Bon"ny\ (-n[y^]), a. [Spelled bonnie by the Scotch.]
   [OE. boni, prob. fr. F. bon, fem. bonne, good, fr. L. bonus
   good. See Bounty, and cf. Bonus, Boon.]
   1. Handsome; beautiful; pretty; attractively lively and
      graceful.
      [1913 Webster]

            Till bonny Susan sped across the plain. --Gay.
      [1913 Webster]

            Far from the bonnie banks of Ayr.     --Burns.
      [1913 Webster]

   2. Gay; merry; frolicsome; cheerful; blithe.
      [1913 Webster]

            Be you blithe and bonny.              --Shak.
      [1913 Webster]

            Report speaks you a bonny monk, that would hear the
            matin chime ere he quitted his bowl.  --Sir W.
                                                  Scott.
      [1913 Webster]

WordNet (r) 3.0 (2006):

bonnie
    adj 1: very pleasing to the eye; "my bonny lass"; "there's a
           bonny bay beyond"; "a comely face"; "young fair maidens"
           [syn: bonny, bonnie, comely, fair, sightly]

U.S. Gazetteer Places (2000):

Bonnie, IL -- U.S. village in Illinois
   Population (2000):    424
   Housing Units (2000): 196
   Land area (2000):     1.233141 sq. miles (3.193820 sq. km)
   Water area (2000):    0.000261 sq. miles (0.000675 sq. km)
   Total area (2000):    1.233402 sq. miles (3.194495 sq. km)
   FIPS code:            07263
   Located within:       Illinois (IL), FIPS 17
   Location:             38.204188 N, 88.905599 W
   ZIP Codes (1990):     62816
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Bonnie, IL
    Bonnie