What is Dig ?
Dig is (verb) to make a hole in the ground with a spade She’s been digging in the garden all morning. They dug a big hole in the ground. The prisoners dug a tunnel to try to escape. (noun) 1. an archaeological excavation, making holes in the ground to find something They are working on a dig to uncover the remains of a Roman fort. 2. a funny attack in words The song is a dig at the Prime Minister.
source: Easier English, Student Dictionary Upper Intermediate Level