Definition from Wiktionary, the free dictionary
yegg (plural yeggs)
- (cant, slang) A person who breaks open safes; a burglar.
- 1904, Edwin S. Porter (director), Capture of the ‘Yegg’ Bank Burglars
- 1940, Raymond Chandler, Farewell, My Lovely, Penguin 2010, p. 265:
- ‘These racketeers are a new type. We think about them the way we think about old time yeggs or needled-up punks.’
a person who breaks open safes; a burglar