Search Result for "rumbling": 
Wordnet 3.0

NOUN (1)

1. a loud low dull continuous noise;
- Example: "they heard the rumbling of thunder"
[syn: rumble, rumbling, grumble, grumbling]


ADJECTIVE (1)

1. continuous full and low-pitched throbbing sound;
- Example: "the rumbling rolling sound of thunder"
[syn: grumbling, rumbling]



The Collaborative International Dictionary of English v.0.48:

Rumbling \Rum"bling\,
   a. & n. from Rumble, v. i.
   [1913 Webster]


WordNet (r) 3.0 (2006):

rumbling
    adj 1: continuous full and low-pitched throbbing sound; "the
           rumbling rolling sound of thunder" [syn: grumbling,
           rumbling]
    n 1: a loud low dull continuous noise; "they heard the rumbling
         of thunder" [syn: rumble, rumbling, grumble,
         grumbling]