an air force officer of a rank comparable to an army lieutenant general.
Marshal vs. MartialMartial can only be used as an adjective, but marshal can be used as either a noun or a verb, but not an adjective.
Origin of air marshal
First recorded in 1915–20
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for air marshal
a senior Royal Air Force officer of equivalent rank to a vice admiral in the Royal Navy
a Royal Australian Air Force officer of the highest rank
a Royal New Zealand Air Force officer of the highest rank when chief of defence forces
a person employed to travel as an armed guard on commercial flights to protect against hijacking
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