Noun. Shortened version of "tomorrow morning," but its use is also similar to that of tonight. Can also be used in the
sense of "this morning," although such use is
less common.
Anytime the
day before, from after noon until midnight (or
later, depending on location and preference), you may say, "What are you doing tomorning?" --What are you doing tomorrow morning?-- or "
Hey, can I catch a ride to work with you tomorning?" --
Hey, can I catch a ride to work with you tomorrow morning?--
During the wee hours of the morning, you can say, "I am going to school tomorning." --I am going to school (later) this morning.-- However, this is not a commonly used form of the word.