Source : Webster's Revised Unabridged Dictionary (1913)

Vim \Vim\, n. [L., accusative of vis strength.]
   Power; force; energy; spirit; activity; vigor. [Colloq.]

Source : WordNet®

vim
     n 1: a healthy capacity for vigorous activity; "jogging works off
          my excess energy"; "he seemed full of vim and vigor"
          [syn: {energy}, {vitality}]
     2: an imaginative lively style (especially style of writing);
        "his writing conveys great energy" [syn: {energy}, {vigor},
         {vigour}]

Source : Free On-Line Dictionary of Computing

VIM
     
        1.  {Vendor Independent Messaging}.
     
        2.  {Vi Improved}.
     
        (1999-06-15)