Also called headshot. an identifying photograph of a suspect or criminal, often one of a set showing a frontal view, a profile view, and a view of the back of the head.
any closeup photograph of someone's face.
Origin of mug shot
First recorded in 1945–50
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for mug shot
informal a photograph of a person's face, esp one resembling a police-file picture
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