to-night /təˈnaɪt/adverb 2noun 1forms 1 adverb2 •this evening, or later when it is darkI want to party tonight!I had a wonderful time with you tonight. •(no longer used) Last night.Besides, I met Lord Bigot and Lord Salisbury, With eyes as red as new-enkindled fire, And others more, going to seek the grave Of Arthur, whom they say is killed to-night On your suggestion. — 1596 noun1 •The nighttime of the current day or date; this night.Tonight is the night.I have high hopes for tonight. formsto-nights