D-Day

noun
variants: or D-day

Definition of D-Day 

: a day set for launching an operation specifically : June 6, 1944, on which Allied forces began the invasion of France in World War II

First Known Use of D-Day

1918, in the meaning defined above

History and Etymology for D-Day

D, abbreviation for day

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Dictionary Entries near D-Day

DCL

DD

dd

D-Day

D-day force

DDC

ddC

Statistics for D-Day

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Time Traveler for D-Day

The first known use of D-Day was in 1918

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