intransitive verb rumbled -·bled, rumbling -·bling

1. to make a deep, heavy, continuous, rolling sound, as thunder
2. to move or go with such a sound
3. Slang to participate in a rumble ()

Etymology: ME romblen, prob. < MDu rommelen < IE base *reu- > rune, rumor

transitive verb

1. to cause to make, or move with, such a sound
2. to utter or say with such a sound
3. to polish, mix, etc. in a rumble, or tumbling box

noun

1. a deep, heavy, continuous, rolling sound
2. a widespread expression of discontent or restiveness
3. a space for luggage or a small extra seat, as for servants, in the rear of a carriage
4. tumbling box
5. ☆ Slang a fight between gangs, esp. of teenagers