flagman

[ flag-muh n ]
/ ˈflæg mən /

noun, plural flag·men.

a person who signals with a flag or lantern, as at a railroad crossing.
a person who has charge of or carries a flag.

Origin of flagman

First recorded in 1660–70; flag1 + -man
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for flagman

flagman

/ (ˈflæɡmən) /

noun plural -men

a person who has charge of, carries, or signals with a flag, esp a railway employee
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