- redline N. Amer.
- redline N. Amer.informalverb1》 drive with (the car engine) at its maximum rpm.2》 refuse (a loan or insurance) to someone due to their area of residence.noun1》 the maximum number of revolutions per minute for a car engine.2》 a boundary or limit which should not be crossed.Originfrom the use of red as a limit marker, in sense 2 of the noun a ring marking part of a map.
English new terms dictionary. 2014.