An excavator is a big machine that helps to dig and move dirt, sand, and rocks. It looks a bit like a giant robot! One of the coolest parts of an excavator is its bucket. The bucket is like a big scoop that can pick up things from the ground.
Imagine when you use a spoon to scoop up your ice cream. The bucket does the same thing, but instead of ice cream, it scoops up dirt or rocks. The excavator's arm can move the bucket up and down, which helps it pick up big piles of dirt and carry them to another place.
So, when you hear someone say, 'The excavator has a bucket to scoop,' they mean that the machine uses its bucket to lift and move things around, just like you do with your toys or food!