Definition of rush hour noun from the Oxford Advanced Learner's Dictionary

 

rush hour

 noun
noun
BrE BrE//ˈrʌʃ aʊə(r)//
 
; NAmE NAmE//ˈrʌʃ aʊər//
 
[countable, usually singular, uncountable] Motoring problems and accidents, Train and bus travel
 
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the time, usually twice a day, when the roads are full of traffic and trains are crowded because people are travelling to or from work the morning/evening rush hour Don’t travel at rush hour/in the rush hour. rush-hour traffic CollocationsDrivingHaving a car have/​own/(British English) run a car ride a motorcycle/​motorbike drive/​prefer/​use an automatic/​a manual/(North American English, informal) a stick shift have/​get your car serviced/​fixed/​repaired buy/​sell a used car/(especially British English) a second-hand car take/​pass/​fail a (British English) driving test/(both North American English) driver’s test/​road test get/​obtain/​have/​lose/​carry a/​your (British English) driving licence/(North American English) driver’s licenseDriving put on/​fasten/(North American English) buckle/​wear/​undo your seat belt/​safety belt put/​turn/​leave the key in the ignition start the car/​engine (British English) change/(North American English) shift/​put something into gear press/​put your foot on the brake pedal/​clutch/​accelerator release the clutch/(especially British English) the handbrake/(both North American English) the emergency brake/​the parking brake drive/​park/​reverse the car (British English) indicate left/​right (especially North American English) signal that you are turning left/​right take/​miss (British English) the turning/(especially North American English) the turn apply/​hit/​slam on the brake(s) beep/​honk/(especially British English) toot/(British English) sound your hornProblems and accidents a car skids/​crashes (into something)/collides (with something) swerve to avoid an oncoming car/​a pedestrian crash/​lose control of the car have/​be in/​be killed in/​survive a car crash/​a car accident/(North American English) a car wreck/​a hit-and-run be run over/​knocked down by a car/​bus/​truck dent/​hit (British English) the bonnet/(North American English) the hood break/​crack/​shatter (British English) the windscreen/(North American English) the windshield blow/(especially British English) burst/​puncture (British English) a tyre/(North American English) a tire get/​have (British English) a flat tyre/​a flat tire/​a puncture inflate/​change/​fit/​replace/​check a tyre/​tire Traffic and driving regulations be caught in/​get stuck in/​sit in a traffic jam cause congestion/​tailbacks/​traffic jams/​gridlock experience/​face lengthy delays beat/​avoid the traffic/​the rush hour break/​observe/(North American English) drive the speed limit be caught on (British English) a speed camera stop somebody for/​pull somebody over for/(British English, informal) be done for speeding (both informal) run/(British English) jump a red light/​the lights be arrested for/​charged with (British English) drink-driving/(both US English) driving under the influence (DUI)/driving while intoxicated (DWI) be banned/(British English) disqualified from driving See related entries: Motoring problems and accidents, Train and bus travel
See the Oxford Advanced American Dictionary entry: rush hour