A fight kept up between one party that flees and another that pursues.

plural of running fight

plural of running day

To catch up with and get a chance at passing or overtaking.

(rail transport, usually in the plural) One of the two rails of a railway track with which the wheels of a train make contact. / (horse racing) A fence which marks the inside edge of a racecourse.

plural of running rail

plural of running line

present participle of run lines

(rail transport) A railway line used to operate trains on, as opposed to a siding.

plural of maiden run