A sharp blow delivered by driving the head into an opponent or object, generally by lowering the head and charging forward or by rapidly tilting the head backward and then forward.

plural of purfling

Initialism of all-purpose. / (medicine) Initialism of anteroposterior. / (military) Initialism of anti-personnel. / (military) Initialism of armor-piercing. / Initialism of alternately placed.

Alternative form of pump someone's tires