verb
    
    rumbles; rumbled; rumbling
    
    [no obj] :to make a low, heavy, continuous sound or series of sounds
    
    
    
    
    
    
    
    always followed by an adverb or preposition [no obj] :to move along with a low, heavy, continuous sound
    
    
    
    
    
    [no obj] US informal + old-fashioned :to fight especially in the street
    
    
    
    [+ obj] Brit informal :to reveal or discover the true character of (someone)
    
    
    
    rumble on
    
    [phrasal verb]
    
    to continue for a long period of time
    
    
    
    noun
    
    plural rumbles
    
    [count] a low, heavy sound or series of sounds
    
    
    
    US informal + old-fashioned :a fight in the street especially between gangs