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leak out (of something)
[for a fluid] to seep out of something or some place. Some of the brake fluid leaked out of the car and made a spot on the driveway. Look under the car. Something's leaking out.
[for information] to become known unofficially. I hope that news of the new building does not leak out before the contract is signed. When the story leaked out, my telephone would not stop ringing.
1. To flow out through some breach or flaw in a container; seep out: Water leaked out the crack in the pipe. As the air leaked out of the balloon, it got smaller and smaller.
2. To become known to the public through a breach of secrecy: We were supposed to keep the date a secret, but it leaked out.
3. To release secret information to the public through unofficial channels: A disgruntled worker leaked the scandalous information out to the reporter. Someone leaked out news of the fraudulent business deal to the newspapers.