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1.
to fist fight. knucks are defined as knuckles, and bucking is the act of punching.
"We're gonna buck some knucks if you don't stop talking smack."

"Me, you, outside by the cafeteria after lunch; we're gonna buck some knucks."
by HeyThereFracaso August 14, 2009

Words related to buck some knucks

buck some nucks fighting fist knuckles punching