A headlong rush into something, heedless of the danger.(noun)
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Use "bullrush" in a sentence
"Reed beds with rush, bullrush and clumps of mauve sea aster encroach on the narrow channel."
"I remember when the only good fighter was the machine gun tripper. now he can use bullrush, disarm, even grapple effectively and is usually pretty damned good at defending against those same type of attacks."
"I think that kids that grow up in cities miss out on the fun of activities like cowtipping and bullrush fights."