eat into something

Từ điển tiếng Anh - Cambridge Advanced Learners Dictionary

eat into sth phrasal verb [ ate into sth eaten into sth eaten into sth eats into sth eating into sth ]
to use or take away a large part of something valuable, such as money or time
• The high cost of living in London is eating into my savings.
Thesaurus⁺: ↑Using and misusing
Main entry: eat_{phrasal verb}