d-day

2 definitions found

d-day - Collaborative International Dictionary of English v.0.48 :

  D-day \D-day\ n.
     1. (Mil.) the day designated for the beginning of a planned
        attack by a military force; in communications the day is
        often otherwise unspecified for security reasons; as, the
        day before D-day the troops will move into position.
        [PJC]
  
     2. 6 June 1944, the day of the landing in France, by troops
        allied against the Germans in World War II.
  
     Syn: 6 June 1944.
          [WordNet 1.5]
  
     3. the day for commencement or execution of any elaborate
        planned activity; -- often used jocosely. [informal]
        [PJC]

d-day - WordNet (r) 2.1 (2005) :

  D-day
      n 1: date of the Allied landing in France, World War II [syn:
           D-day, 6 June 1944]