Doserless refers to a type of coffee grinder that doesn't require the use of a dosing chamber. This means that you can simply pour your coffee beans into the grinder, select your grind setting, and start grinding without having to worry about measuring out the perfect dose. Doserless grinders are often seen as more convenient and easier to use than traditional dosing grinders, and they're also great for those who want to experiment with different grind sizes or who don't always need a full dose of coffee.