Dictionary.com
definitions

Charles Martel

[mahr-tel; French mar-tel]
noun
  1. a.d. 690?–741, ruler of the Franks 714–741 (grandfather of Charlemagne).

Martel

[mahr-tel; French mar-tel]
noun
  1. Charles. Charles Martel.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for charles martel

Charles Martel

noun
  1. grandfather of Charlemagne. ?688–741 ad, Frankish ruler of Austrasia (715–41), who checked the Muslim invasion of Europe by defeating the Moors at Poitiers (732)

Martel

noun
  1. See Charles Martel
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