underboss
un·der·boss
noun
1.
an assistant or second-in-command to a chief (especially in a crime syndicate)
Origin
From under- + boss, calque from Italian sotto capo.
Related words
Broader terms
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.