(set phrase) To have permission or freedom to move around throughout an area or to use something at will.

An enclosed area, attached to a chicken coop, in which poultry are allowed to run around and peck.

Alternative spelling of runoff / (motor racing) A run-off area; a paved area around the track at a spot that drivers are likely to go off, as opposed to a gravel trap, grass or a barrier.

(idiomatic, chiefly UK) To escape, flee or leave a situation or relationship, usually as a result of a shocking or sudden announcement or revelation.

(of a person) Tired and exhausted. / (of a place) Decrepit. / (of a clockwork mechanism) Having the spring unwound.

Alternative form of run down

plural of home run

(nautical) To sail away quickly by cutting the yarns that hold the sails furled; to cut the anchor cable and not wait to weigh it. / (by extension) To hurry away; to escape.

A rehearsal of a drama, especially an uninterrupted one, but with no makeup or costume. / A brief outline of the main points of something; a rundown.

(railroad) In which trains continue without stopping while going through a station.