Used as a farewell, stating that the speaker and interlocutor(s) will see each other the next day.

A goal or action which is postponed until a future day is often never accomplished; do not procrastinate. / Tomorrow has no reality, since every day is experienced as today.

Things are fleeting; something that is ubiquitous or popular at one point is soon forgotten.

Asks if someone is busy tomorrow, possibly to invite them to do something if they are available. ("Tomorrow" can be replaced by other dates, such as "are you doing anything on the weekend", etc.)

It is better to have a sure thing now than a possibility of more later.

Life is short, so you should enjoy it while you can. / In speaking pejoratively of epicurean beliefs.

Do not procrastinate whatever that can be done today until tomorrow.

Without a tomorrow; futureless.

(informal) Futuristic.

(informal) Approximately tomorrow.