Noun

• S: (n) boom, roar, roaring, thunder (a deep prolonged loud noise)
• S: (n) thunder (a booming or crashing noise caused by air expanding along the path of a bolt of lightning)
• S: (n) big H, hell dust, nose drops, smack, thunder, skag, scag (street names for heroin)
• domain usage
• direct hypernym / inherited hypernym / sister term

Verb

• S: (v) thunder (move fast, noisily, and heavily) "The bus thundered down the road"
• S: (v) thunder, roar (utter words loudly and forcefully) "`Get out of here,' he roared"
• S: (v) thunder, boom (be the case that thunder is being heard) "Whenever it thunders, my dog crawls under the bed"
• S: (v) thunder (to make or produce a loud noise) "The river thundered below"; "The engine roared as the driver pushed the car to full throttle"