Yes, that's the figurative meaning. The literal meaning is that soldiers dig holes in the ground for protection. (Such holes are called foxholes).
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Yes, that's the figurative meaning.
The literal meaning is that soldiers dig holes in the ground for protection. (Such holes are called foxholes).
Clive
It depends.
Right after everyone sits down to a meal, there is the common imperative "Dig in!"
They are dug in. - In military contexts, this means that they are solidly prepared for an offensive. Their fortifications are strong.