n.
1.a deep prolonged loud noise
2.a booming or crashing noise caused by air expanding along the path of a bolt of lightning
3.street names for heroin thunder v.
1.move fast, noisily, and heavily
2.utter words loudly and forcefully
3.be the case that thunder is being heard
4.to make or produce a loud noise
Idiom of the Day
(not) lift a finger
to not do anything to help anyone
The man is a nice person but he will not lift a finger to help anyone else.