an ecclesiastical standard or banner, as for carrying in procession.
the military standard of Constantine the Great and later Christian emperors of Rome, bearing Christian symbols.
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How to use labarum in a sentence
The age that could accept such a prodigy, of course found no difficulty in the vision of Constantine and the story of the labarum.History of the Intellectual Development of Europe, Volume I (of 2) | John William Draper
The safety of the labarum was entrusted to fifty guards of approved valour and fidelity.Curiosities of Christian History | Croake James
He received it, notwithstanding the labarum, and received further the title of Pontifex Maximus, which he retained all his life.A Philosophical Dictionary, Volume 3 (of 10) | Franois-Marie Arouet (AKA Voltaire)
This standard was known by the name of the labarum—a word the etymology of which is very uncertain.
labarum, lab′a-rum, n. a Roman military standard adopted as the imperial standard after Constantine's conversion.
British Dictionary definitions for labarum
a standard or banner carried in Christian religious processions
the military standard bearing a Christian monogram used by Constantine the Great
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