Meaning

noun the day after today

noun the near future

adverb the next day, the day after, following the present day

originFrom Middle English tomorwe, tomorwen, from Old English tō morgne (“tomorrow”, adverb), from tō (“at, on”) + morgne (dative of morgen (“morning”)), from Proto-Germanic *murganaz (“morning”), perhaps from Proto-Indo-European *mergʰ- (“to blink, to twinkle”), equivalent to to- + morrow. Compare French demain, Dutch morgen, German morgen, Swedish imorgon or Danish i morgen.

Etymology from Wiktionary, CC BY-SA 3.0