Much like Wheel of Fortune (which debuted at around the same time), Definition was a game show based on Hangman, where two teams of a celebrity and civilian player competed to solve such a puzzle. Both teams alternated guessing letters that were in a puzzle on a board (accompanied by a crossword-style hint); one team member had to "give away" a letter which wasn't in the puzzle, after which their teammate had to "take" a letter that was in it. If both teammates succeeded, they were given a chance to solve the puzzle. If not, they lost their turn; in addition, if the given-away letter was in the puzzle, the opponents got a free guess. The first team to solve two puzzles (later changed to three) became the champions and played a bonus round.
Provides examples of:
- The Announcer: Jim Perry for Season 1, then Dave Devall.
- Ascended Extra: Jim Perry was promoted from announcer to emcee at the beginning of Season 2.
- Bonus Round: One more puzzle, the letters are revealed in alphabetical order. Win $10 multiplied by the number of unrevealed letters and a prize if solved.
- Consolation Prize: For losing the Bonus Round, you get just $10. No, that's not a typo—the actual consolation was ten bucks.
- Game Show Host: Bob McLean for Season 1, then Jim Perry.
- Home Game: One was issued by Milton Bradley in 1981, recycling parts from their 1975 Wheel Of Fortune games. Interestingly, the box art predates the change to all civilians.
- Home Participation Sweepstakes: Later in the run, puzzles could also be sent in by viewers.
- Hurricane of Puns: A lot of the clues were like this.
- Undesirable Prize: Just about everything, given how cheap the show was.