A transient occurrence with no long-term effect. / A career notable for early success not followed by significant accomplishment.

(computer hardware) A small electronic device used to store digital data, more portable and robust than a hard drive.

A device that produces a short flash of light to help illuminate a scene, mostly for night-time or indoors photography, to make the picture brighter.

(computer hardware) A rewritable memory chip that retains its data without a power supply.

(astronomy) The sudden beginning of the burning of helium in the core of stars of intermediate mass or on the surface of an accreting white dwarf.

plural of flash drive

(US) A sudden, but brief, sensation of heat over the entire body; a common symptom of menopause.

plural of flash flood

(meteorology) A sudden, rapid flood, usually of short duration and local impact.

(of paint used on an aircraft) Intended to reflect the thermal radiation from a nuclear detonation.