noun
point of a sword; sword tip
Refers specifically to the sharp tip of a sword or blade. Used in literal descriptions, martial arts, and figurative expressions about a critical point or threat.
剣先を相手に向ける。
Point the tip of the sword at the opponent.
彼の言葉には剣先のような鋭さがあった。
His words had a sharpness like the point of a sword.
Also means the tip of a sword, but 切っ先 is more common in everyday language and can refer to the tip of any blade, while 剣先 is more formal and specifically associated with swords.
Compound of 剣 (ken, 'sword') and 先 (saki, 'tip, point'). The reading けんさき follows standard on-kun combination.