an influential person accorded special treatment while visiting an organization, industry, city, etc.
a visitor, as a tourist or vacationer, in a city, presumed to be a big spender.
Origin of visiting fireman
First recorded in 1935–40
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
US informal a visitor whose presence is noticed because he is an important figure, a lavish spender, etc
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