Magicuben.
/ˈmadʒᵻkjuːb/, U.S. /ˈmædʒəˌkjub/ Photography.
A flashcube, esp. one set off mechanically (rather than electrically).
ΘΚΠ
society > leisure > the arts > visual arts > photography > camera > parts and accessories of camera > [noun] > flash-gun or tube > flash bulb
flashlight1886
flash-lamp1890
flash-bulb1935
flash cube1965
Magicube1970
1970 Wall St. Jrnl. 25 June 8/3 The new Sylvania bulb is being marketed in cube form..under the trade name Magicube.
1974 State (Columbia, S. Carolina) 3–4 Mar. g11/2 Be sure to have plenty of cartridges of color film and magicubes on hand.
1987 A. Bailey Illustr. Dict. Photogr. 80/1 Apart from packs of flashcubes such as Magicubes and Flashbars used on inexpensive and instant picture cameras, flash bulbs are now practically obsolete.
This is a new entry (OED Third Edition, March 2000; most recently modified version published online March 2022).
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n.1970