The Main-Gauche dagger, popular during the Renaissance period, was often used in martial arts and combat duels. There were several variations of this weapon, notably the Trident-Dagger. This version was distinctive for its three blades arranged in a trident-like formation. These blades weren't purely decorative; they assisted the user in blocking or intercepting incoming sword attacks. Some Trident-Daggers were fixed in this design, while others included a feature near the handle, allowing the blades to extend with the simple push of a button.