(telecommunications) The time elapsed for a message to a remote place and back again.

alternative form of run rings around

(idiomatic) To repeatedly do the same thing without making any progress.

plural of round-bottomed flask

alternative form of run circles around

(Britain) general education

A type of collaborative fiction or storytelling in which a number of authors each write chapters of a novel or pieces of a story, in rounds.

plural of round-robin story

plural of plastic baton round

A non-lethal projectile made of aluminium carcase and plastic head, designed to be fired from a specialized gun, for riot control.