WordWeb Online

1. A deep prolonged loud noise
   - boom, roar, roaring
    
2. A booming or crashing noise caused by air expanding along the path of a bolt of lightning
    
3. A street name for heroin
   - big H, hell dust, nose drops, smack, skag, scag

1. Move fast, noisily, and heavily
   "The bus thundered down the road"
    
2. Utter words loudly and forcefully
   "'Get out of here,' he thundered";
   - roar
    
3. Be the case that thunder is being heard
   "Whenever it thunders, my dog crawls under the bed";
   - boom
    
4. To make or produce a loud noise
   "The river thundered below"

Derived forms: thunders, thundering, thundered

Type of: diacetylmorphine, heroin, howl, junk, move, noise, roar, shout

Encyclopedia: Thunder Thunder, Lightning, Strike Thunder, Perfect Mind