onrush

Noun

• a forceful forward rush or flow
  • 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
    

• (military) an offensive against an enemy (using weapons)
  • the attack began at dawn
    

Related words

• Synonyms: 
  attack , onslaught , onset