the beginning of an offensive; "the attack began at dawn"
a forceful forward rush; "it was forgotten in the onrush of events"
(military) an offensive against an enemy (using weapons); "the attack began at dawn"
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 onsrush of her thoughts"
(military) an offensive against an enemy (using weapons)