1. a sequence or series.
2. a petition, remonstrance, or the like, having the signatures arranged in circular form so as to disguise the order of signing.
3. a letter, notice, or the like, circulated from person to person in a group, often with individual comments being added by each.
4. Sports. a tournament in which all of the entrants play each other at least once, failure to win a contest not resulting in elimination.
Also, round-robin .
[ 1540-50 ]