Dig In Meaning
(idiomatic) To adopt a resolute state of mind (often: to dig in one's feet, heels, etc.)
Example: I wanted to say grace before dinner, but the kids were already digging in.
To make a burst of hard work.
I've got to dig in for a couple of weeks to secure my promotion.
2011 November 5, Phil Dawkes, â€œQPR 2 - 3 Man Cityâ€, BBC Sport:
Mancini's men were far from their best but dug in to earn a 10th win in 11 league games and an eighth successive victory in all competitions to maintain their five-point lead at the top of the table.