round robin /(round" rŏb"ĭn)/

round· rob·in

round robin

n.
  1. Any series or sequence of actions.
  2. A document circulated from one person to another in a group, often with comments added by each recipient.
  3. A petition or similar document, in which the signatures are arranged in circular form in order to conceal the order of signing.
  4. A tournament in which each contestant plays against every other contestant at least once; a failure to win any contest does not result in elimination from the tournament. Contrasted with elimination tournament (Sports)