[1] : The Collaborative International Dictionary of English v.0.48

kickoff \kickoff\ n. football
   1. a kick from the center of the field to start a football
      game or to resume it after a score.
      wordnet 1.5

   2. the time at which an event or activity begins.

   syn: beginning, commencement, first, outset, start, starting
        time, offset.
        wordnet 1.5

[2] : WordNet (r) 2.0

kickoff
     n 1: football a kick from the center of the field to start a
          football game or to resume it after a score
     2: the time at which something is supposed to begin; "they got
        an early start"; "she knew from the get-go that he was the
        man for her" syn: beginning, commencement, first, outset,
         get-go, start, starting time, showtime, offset
        ant: middle, end
     3: a start given to contestants; "i was there with my parents
        at the kickoff" syn: send-off, start-off
see also:
beginning commencement first outset get-go start 
starting time showtime offset middle end 
send-off start-off 

Kickoff >> K Words
Kickoff, definition of term: Kickoff
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