onrush
1. [ noun ] (military) an offensive against and enemy (using weapons)
Synonyms: attack onslaught onset
Examples:

"the attack began at dawn"

Related terms: operation strike fire charge bombing penetration counterattack diversion blitz banzai_attack surprise_attack ground_attack strafe assault military
2. [ noun ] a forceful forward rush or flow
Examples:

"from the bow she stared at the mesmerising onrush of the sea where it split and foamed" "the explosion interrupted the wild onrush of her thoughts"

Related terms: rush
Similar spelling:   onerous
  onerously