From WordNet (r) 2.0 (August 2003) [wn]:
tomorrow
n 1: the day after today; "what are our tasks for tomorrow?"
2: the near future; "tomorrow's world"; "everyone hopes for a
better tomorrow"
adv : the next day, the day after, following the present day
From The Collaborative International Dictionary of English v.0.48 [gcide]:
Tomorrow \To*mor"row\, adv. [Prep. to + morrow.]
On the day after the present day; on the next day; on the
morrow.
[1913 Webster]
Summon him to-morrow to the Tower. --Shak.
[1913 Webster]
From The Collaborative International Dictionary of English v.0.48 [gcide]:
Tomorrow \To*mor"row\, n.
The day after the present; the morrow."To-morrow is our
wedding day." -- Cowper.
[1913 Webster]
One today is worth two to-morrows. --Franklin.
[1913 Webster]