The word "dug" is the past tense of the verb "dig." It means to use a tool or your hands to break the ground and create a hole or trench. Full definition
It drove me into digging into myself to find out what it was that I should do, getting a dialogue going between me and what I was doing. (painters-table.com)
However, if you are interested in digging deeper and comparing debt payoff to investing, this article may give you a few new things to think about. (vertex42.com)
I think it's become a theme because this year, I wanted to really dig in deep and choose topics and themes that would add value to our tribe. (sharingajourney.com)