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general::
Phrase(s): dig down [and] dig deep
1. Lit. to excavate deeply. • They are really having to dig deep to reach bedrock. • We are not to the buried cable yet. We will have to dig down some more. 2. Fig. to be generous; to dig deep into one’s pockets and come up with as much money as possible to donate to something. (As if digging into one’s pocket.) • Please dig down. We need every penny you can spare. • Dig down deep. Give all you can.
McGrawhill's American Idioms And Phrasal Verbs