Make a continuous deep, resonant sound
thunder rumbled high above us
An uncovered folding seat in the rear of a car
An attachment at the rear of a carriage for storing luggage or to provide seating, typically for servants; = rumble. Now historical.
A series of raised strips across a road or along its edge, changing the noise a vehicle’s tyres make on the surface and so warning drivers of speed restrictions or of the edge of the road
A dish of mashed potato cooked with fat and often also cabbage, onion, etc.
(Of a dispute) continue in a persistent but low-key way