a member of a criminal mob.

Origin of mobster

1915–20, Americanism; mob1 (in the sense “a member of a criminal gang”)+ -ster Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for mobster

Contemporary Examples of mobster

Historical Examples of mobster

  • The mobster started from his chair, his eyes darting about the room.


    Clifford Donald Simak

British Dictionary definitions for mobster



a US slang word for gangster
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for mobster

1916, from mob (n.) in the criminal sense + -ster.

Online Etymology Dictionary, © 2010 Douglas Harper