(of a locomotive, train, etc.) Its first trip in service, in some cases after a rebuild.

(often followed by of) to risk something important.

plural of running shed

(rail transport) A building used for the maintenance and preparation for service of locomotives.

Third-person singular simple present indicative form of run scared

Subject to strenuous effort or tough competition.

(baseball) The portion of the field between the basepath and the foul ball line in which a batter is allowed to run without causing or receiving interference. Also referred to as runner's lane.

Third-person singular simple present indicative form of run amuck.

Third-person singular simple present indicative form of run amok.

present participle of run amuck