February: [13] Etymologically, February is the ‘month of purification’. The word comes via Old French feverier and late Latin febrārius from Latin februārius (English reintroduced the Latin -ruar- spelling in the 14th century). This was a derivative of februa, a word borrowed into Latin from the language of the ancient Sabine people of Italy which was used to designate a festival of purification held on 15 February. [February etymology, February origin, 英语词源]