dip into

[dip into] {v. phr.} 1. To scan or sample lightly and briefly (said of printed materials).

I didn't get a chance to read all of War and Peace, but I dipped into it here and there.

2. To take money out of a savings account or a piggy bank.

I am sorry to have to say that I had to dip into the piggy bank; I took out $6.75.