COMMON If you walk into the lion's den, you deliberately place yourself in a dangerous or difficult situation. Confident that he had done no wrong, the Minister last night walked into the lion's den of his press accusers, looked them in the eye, and fought back. Note: Other verbs such as go, step, or venture can be used instead of walk. We need to win tonight's game, but we are going into the lion's den without one of our key men. Note: You can also say that someone is thrown or sent into the lion's den if they are put in a difficult or dangerous situation. She was eagerly accepted by the teaching agency, and thrown straight into the lion's den at a tough comprehensive school in Surrey. Note: This expression comes from the story in the Bible of Daniel, who was thrown into a den of lions because he refused to stop praying to God. However, he was protected by God and the lions did not hurt him. (Daniel 6)