NOUN (2)

1. a holiday taken by a newly married couple;

2. the early (usually calm and harmonious) period of a relationship; business or political;


VERB (1)

1. spend a holiday after one's marriage;
- Example: "they plan to honeymoon in Hawai'i"

The Collaborative International Dictionary of English v.0.48:

Honeymoon \Hon"ey*moon`\, 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]

WordNet (r) 3.0 (2006):

honeymoon
    n 1: a holiday taken by a newly married couple
    2: the early (usually calm and harmonious) period of a
       relationship; business or political
    v 1: spend a holiday after one's marriage; "they plan to
         honeymoon in Hawai'i"