'onslaught' definitions:

Definition of 'onslaught'

From: WordNet
noun
A sudden and severe onset of trouble
noun
(military) an offensive against an enemy (using weapons); "the attack began at dawn" [syn: attack, onslaught, onset, onrush]
noun
The rapid and continuous delivery of linguistic communication (spoken or written); "a barrage of questions"; "a bombardment of mail complaining about his mistake" [syn: barrage, bombardment, outpouring, onslaught]

Synonyms of 'onslaught'

From: Moby Thesaurus