What is the meaning of thunder?

noun

• A deep prolonged loud noise.
  • synonyms: boom, roar, roaring
• A booming or crashing noise caused by air expanding along the path of a bolt of lightning.
• Street names for heroin.
  • synonyms: big H, hell dust, nose drops, smack, skag, scag

verb

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