- 1[intransitive] to make a long, deep sound or series of sounds The machine rumbled as it started up. thunder rumbling in the distance I'm so hungry my stomach's rumbling.
- 2[intransitive] + adv./prep. to move slowly and heavily, making a rumbling sound tanks rumbling through the streets The train rumbled nearer.
- 3 [intransitive] (informal) (of a gang of young people) to fight against another gang
NAmE//ˈrʌmbl//Verb Forms present simple I / you / we / they rumble
he / she / it rumbles
past simple rumbled
-ing form rumbling