A study or work session that goes through the night; studying without sleep (usually a last-minute course of action).
The term is popular with college students who spend the night before an exam studying (or 'cramming'), trying to learn a lot of material in a short period of time. The term is frequently used in the phrase 'pull an all-nighter'.
To stay up all night working, usually a complaint about having done so against ones will. Usually preceded by "pulled an..."
Related to forms of toil, business, schoolwork, etc.