sword point
鋩 centers on the sharp tip of a blade: a sword point or spearhead. It refers specifically to the piercing end of a weapon.
鋩 combines 金 (metal) with 芒, which likely contributes the sound and may relate to a sharp point or awn. The character is used for the point of a sword or spear.
The metal radical 金 on the left and the sharp-looking 芒 on the right together suggest a metal point: the tip of a sword.
For ボウ, imagine a bow (as in bow and arrow) being sharpened to a point: bow -> ボウ, and the metal tip becomes a sword point.