spearing
n.β Β«A helmet-to-helmet hit on a quarterback, or on a receiver in the act of making a catch is illegal. Also illegal: hitting a player already on the ground with a helmet or “spearing,” as itβs commonly called.Β» ββThe message is clear to NFL players: Keep your head up during games” Canadian Press Sept. 10, 2007. (source: Double-Tongued Dictionary)