round-robin

Definitions

Computing

  • noun
    (written as round robin)
    a way of organising the use of a computer by several users, who each use it for a time and then pass it on the next in turn

Sports

  • noun a tournament in which each player or team plays against every other player or team in turn

Idiom of “round-robin”

letter of complaint signed by a number of people, sometimes in a circular form so that there is no obvious ringleader
http://www.dictionarycentral.com/definition/round-robin.html