1. [ noun ] a deep prolonged loud noise
Synonyms: roar roaring boom
Related terms: noise roar boom
2. [ noun ] (meteorology) a booming or crashing noise caused by air expanding along the path of a bolt of lightning
Related terms: noise thunderclap
3. [ verb ] move fast, noisily, and heavily

"The bus thundered down the road"

Related terms: move boom
4. [ verb ] utter words loudly and forcefully
Synonyms: roar

"`Get out of here,' he roared."

Related terms: shout boom bellow
5. [ verb ] be the case that thunder is being heard
Synonyms: boom

"Whenever it thunders, my dog crawls under the bed."

Related terms: storm
6. [ noun ] (medicine,pharmacology) street names for heroin
Synonyms: hell_dust nose_drops smack big_h
Related terms: H
7. [ verb ] to make or produce a loud noise

"The river thundered below" "The engine roared as the driver pushed the car to full throttle."

Related terms: roar boom
Similar spelling:   thundery