Spadeful used in a sentence

Spadeful in a sentence as a noun

There's a Lego store near me where I can buy pieces by the spadeful. I'm not sure what you're on about.

I wonder what volume ‘a spadeful’ is? Presumably not a garden spade?

It is sometimes carried out by an\n official who digs the first spadeful of dirt from the ground,\n to begin the preparatory excavation work. \n \n Syn: groundbreaking ceremony.