Rumbling

noun
1.
Often, rumblings. the first signs of dissatisfaction or grievance.
2.
rumble (def 7).
verb (used without object), rumbled, rumbling.
1.
to make a deep, heavy, somewhat muffled, continuous sound, as thunder.
2.
to move or travel with such a sound:
The train rumbled on.
3.
Slang. to have or take part in a street fight between or among teenage gangs:
Rival gangs rumbled on Saturday afternoon.
verb (used with object), rumbled, rumbling.
4.
to give forth or utter with a rumbling sound:
to rumble a command.
5.
to cause to make or move with a rumbling sound:
to rumble a wagon over the ground.
6.
to subject to the action of a rumble or tumbling box, as for the purpose of polishing.
noun
7.
a deep, heavy, somewhat muffled, continuous sound:
the rumble of tanks across a bridge.
8.
rumble seat.
9.
a rear part of a carriage containing seating accommodations, as for servants, or space for baggage.
10.
a tumbling box.
11.
Slang. a street fight between rival teenage gangs.
verb
1.
to make or cause to make a deep resonant sound: thunder rumbled in the sky
2.
to move with such a sound: the train rumbled along
3.
(transitive) to utter with a rumbling sound: he rumbled an order
4.
(transitive) to tumble (metal components, gemstones, etc) in a barrel of smooth stone in order to polish them
5.
(transitive) (Brit, informal) to find out about (someone or something); discover (something): the police rumbled their plans
6.
(intransitive) (US, slang) to be involved in a gang fight
noun
7.
a deep resonant sound
8.
a widespread murmur of discontent
9.
another name for tumbler (sense 4)
10.
(US & Canadian, NZ, slang) a gang fight
rumble