noun
spearhead; point of a spear
Literal meaning: the sharp tip of a spear or halberd.
槍の矛先が光っていた。
The spearhead was shining.
noun
focus of an attack; target of criticism; brunt; force of an argument
Figurative use: the direction or target of an attack, criticism, or argument. Often used with verbs like 向ける (direct), 向く (be directed), 交わす (dodge), or そらす (deflect). Sense 3 (force/edge of an argument) is closely related and naturally covered by the same figurative usage.
彼は矛先を私に向けた。
He directed his attack at me.
批判の矛先が政府に向いている。
The brunt of the criticism is directed at the government.