a general term for any ERS (ellipsoidal reflector spotlight), (eg. source four) with shutters, accessory slot, gobo slot, and adjustable/changeable barrel. Leko refers to the Lekolite released in 1933 that became extremely popular, and while the actual lights bearing the brand name Leko have become less common, the term has stuck for all ERS instruments.
Bobby the inferior: What should we use for the front lights?

Danny the designer: well we've got all those lekos laying around.

Bobby: You mean those source fours?

Danny: of course
by lightmeup June 5, 2010
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The only thing you buy that make you happier
Ali buy some leko for her dinner
by aley sakrey June 26, 2020
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LEKO means Lone Egotistical Kool Orphan

Or it’s meant sexual
Dude: Do you have some loli porn that I can watch

Other dude: Yeah I have some Leko
by Neizer39999 February 15, 2021
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