H-HOUR
Meaning of H-HOUR in English
/aych"oweur', -ow'euhr/ , n.
the time, usually unspecified, set for the beginning of a planned attack.
[ H (for hour ) + HOUR; cf. D-DAY ]
Random House Webster's Unabridged English dictionary.
Полный английский словарь Вебстер - Random House .
2012