Flashbacks

noun

1. (authorship) A dramatic device in which an earlier event is inserted into the normal chronological flow of a narrative.
2. A vivid mental image of a past trauma, especially one that recurs.
3. A similar recurrence of the effects of a hallucinogenic drug.
4. The condition of the flame propagating down the hose of an oxy-fuel welding system.
5. A query that operates against data from an earlier time, before it was changed.