adjective

• (obsolete, of a weapon, etc.) Sharp-pointed; keen.
• Neat; eloquent; applicable; relevant.
• Evoking strong mental sensation, to the point of distress; emotionally moving.
• (figuratively, of a smell, taste) Piquant, pungent.
• (figuratively, of a look, word) Incisive; penetrating; piercing.
• (chiefly Britain, dated) Inducing sharp physical pain.