The act of fighting or cutting with a knife. / (BDSM) A sexual practice involving the use of knives, daggers, or swords for physical and mental stimulation.

(mathematics) A linear transformation that is its own inverse, i.e., that has period two.

A type of sequel which portrays events that occur at the same time as the original work, but with different characters in a different setting

(Australia, India) A breed of light saddle horse from Australia, once favoured as a warhorse.