round robin
round robin (round" rob"in) , noun
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.
(Sports) 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
Also: round-robin