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slang A thief or burglar, especially one who specializes in safe-cracking. A: "I heard no one can crack the safe they're keeping that diamond in." B: "Trust me, she's the best yegg in the business."
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
1. n. a tramp, thief, or safecracker. (Underworld.) See if you can find that yegg we worked with on the bank job. He’ll do.
2. n. an obnoxious male. A couple of drunken yeggs were talking a little too loud, so Spike showed them the door.
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.