Ga·bri·el (g??br?-?l)n. In the Bible, an angel who explained signs from God and announced the conception, birth, and mission of Jesus to Mary. In Islamic tradition, Gabriel is believed to have revealed the Koran to Muhammad.American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.Gabriel (??e?br??l) n (Bible) Bible one of the archangels, the messenger of good news (Daniel 8:16?26; Luke 1:11?20, 26?38)Gabriel (French ?abri?l) n (Biography) Jacques-Ange (?ak???). 1698?1782, French architect: designed the Petit Trianon at VersaillesCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014Ga?bri?el (?ge? bri ?l) n. one of the archangels, appearing usu. as a divine messenger. Dan. 8:16, 9:21; Luke 1:19, 26. Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.