'Thunderstorm' definitions:

Definition of 'thunderstorm'

From: WordNet
noun
A storm resulting from strong rising air currents; heavy rain or hail along with thunder and lightning [syn: thunderstorm, electrical storm, electric storm]

Definition of 'Thunderstorm'

From: GCIDE
  • Thunderstorm \Thun"der*storm`\, n. A storm accompanied with lightning and thunder. [1913 Webster]

Synonyms of 'thunderstorm'

From: Moby Thesaurus