From Longman Dictionary of Contemporary Englishdig into something phrasal verb1 to start using a supply of something, especially money I’m going to have to dig into my savings again.2 to try to find out about something unknown or secret He had been digging into her past. → dig in → dig→ See Verb table
Examples from the Corpus
dig into • Human destruction of the archaeological record might be caused by burials of the kind just described being dug into earlier deposits.• He dug into his coat and handed Miguel a thick envelope.• They dig into mud, so supply river sand, at least, not gravel.• I stood up, dug into my deep pocket, and handed over the little package.• S. specialists dug into the earth in several spots and found small pieces of what appeared to be human remains.• They used the pitchforks to dig into the raked mounds of debris and to add them to the growing mountain.• They dug into the sand with interest.• They dug into the water as though into the ground and pulled it back, piling it behind him like dirt. 