Crassus, Marcus Licinius Syllabification: (Cras·sus, Marcus Licinius)Pronunciation: /ˈkrasəs/Definition of Crassus, Marcus Licinius (circa 115–53 bc), Roman politician. After defeating Spartacus in 71 bc, he joined Caesar and Pompey in the First Triumvirate in 60. Crassus, Marcus Licinius in other Oxford dictionaries Definition of Crassus, Marcus Licinius in the British & World English dictionary