'Typhoon' definitions:

Definition of 'typhoon'

From: WordNet
noun
A tropical cyclone occurring in the western Pacific or Indian oceans

Definition of 'Typhoon'

From: GCIDE
  • Typhoon \Ty*phoon"\, n. [Earlier tuffoon, tuffon, Pg. tuf[~a]o, Ar. tuf[=a]n a violent storm; probably fr. Gr. tyfw^n, tyfw^s, a violent whirlwind, that rushes upward from the earth, whirling clouds of dust (cf. Typhus); or perhaps from Chin. t'ai-fung a cyclonic wind.] A violent whirlwind; specifically, a violent whirlwind occurring in the Chinese seas. [1913 Webster]

Synonyms of 'typhoon'

From: Moby Thesaurus