RORY: It’s [the wall Paris built] very impressive.
PARIS: I’ve done it a million times before. It’s no big deal. Louise! What did I just tell you? Use a grub axe for that!
A grub axe is another word for a mattock, a versatile hand tool used to dig up roots and shrubs, and otherwise clear ground for building and planting.
The Annotated Gilmore Girls 