Geof·frey of Mon·mouth 
(jĕfrē; mŏnməth) 1100?-1154.
(jĕfrē; mŏnməth) 1100?-1154. English chronicler whose semihistorical Historia Regum Britanniae (c. 1139) popularized Arthurian legend and contains the source material for several of Shakespeare's plays.
- machinable
- machinate
- machination
- machinator
- machine
- machine bolt
- machine code
- machine finish
- machine gun
- machine-gun
- machine gunner
- machine language
- machine pistol
- machine-readable
- machinery
- machine screw
- machine shop
- machine tool
- machine-tooled
- machine translation
- machine-wash
- machinist
- machismo
- Machmeter
- Mach number