RUMBLE

I. verb (~d; rumbling) Etymology: Middle English; akin to Middle High German rummeln to ~ Date: 14th century intransitive verb to make a low heavy rolling sound , to travel with a low reverberating sound , to speak in a low rolling tone, to engage in a ~, transitive verb to utter or emit in a low rolling voice, to reveal or discover the true character of, ~r noun II. noun Date: 14th century 1. a low heavy continuous reverberating often muffled sound (as of thunder), low frequency noise in phonographic playback caused by the transmission of mechanical vibrations by the turntable to the pickup, a seat for servants behind the body of a carriage, 3. widespread expression of dissatisfaction or unrest, a street fight especially among gangs