n. 1. The first month after marriage. Addison. [ 1913 Webster ]
2. A vacation taken together by a newly married couple, usually including a trip away from home. [ PJC ]
3.Hence: [ fig. ] Any initial period of harmony after two or more people or organizations begin working together; as, the usual honeymoon for a newly elected president was cut short by resumption of partisan sniping over the budget. [ PJC ]
[なりたりこん, naritarikon](n) Narita divorce; divorce case of a newlywed couple breaking up upon their return to Narita Airport from their honeymoon abroad[Add to Longdo]