IPA: /ˈrʌmblər/
KK: /ˈrʌmbələr/
A person or thing that makes a low, continuous sound, often like a rumble.
The rumbler in the distance signaled the approaching storm.
Rumbler → The word is formed from "rumble" (of imitative origin, representing a low, heavy sound) and "-er" (meaning a person or thing that performs an action). A rumbler is something or someone that produces a rumbling sound.
Think of the sound 'rumble' that represents a low, heavy noise, and remember that a 'rumbler' is something that makes that noise.