2 definitions by Roy Hills

Top Definition
A mythical substance which is supposededly vital to the functioning of electronic equipment. Therefore when the magic smoke leaks out, the equipment stops working.

This term is often heard when some hapless individual wires equipment up backwards or to the wrong voltage supply, causing the circuit boards to fry. At this point, some wag will say "that won't work again, because you've let the magic smoke out".
You idiot, you've let the magic smoke out!
by Roy Hills December 30, 2004
When an easy catch is missed because the ball slips through the fingers. Normally used in cricket.
How could you drop that you butterfingers!
by Roy Hills February 01, 2004

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