antebellum (adj.)youdaoicibaDictYouDict[antebellum 词源字典]
also ante-bellum, from Latin phrase ante bellum, literally "before the war;" see ante- + bellicose. In U.S., usually in reference to the American Civil War (1861-65); first attested in a June 14, 1862, entry in Mary Chesnut's diary.[antebellum etymology, antebellum origin, 英语词源]