sword-breaker

Noun

 * 1) A short sword or dagger with a deeply notched or toothed blade, or with secondary projections, designed to catch or grapple an opponent's weapon.
 * 2)  A notch or projection on a dagger (etc) designed to catch an opponent's weapon.
 * 1)  A notch or projection on a dagger (etc) designed to catch an opponent's weapon.

Alternative forms

 * swordbreaker, sword breaker