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