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2.
The icicles that hang off the edge of a building that could break off at any moment and skewer you from above.
Hey! Look up, and watch where you are walking! There are HUGE death-cicles up there! With even the slightest breeze they could break off, and kill you!
by ismirth93 January 19, 2009
 
1.
An abnormally large icicle that forms into any shape resembling a giant spear, upside down sword, or other object of deadly shape and size, that when it eventually falls could cause serious physical damage to a person or property.
A Deathcicle totally broke off from my roof and impaled someone the other day, it was huge!
by Veran0000 February 11, 2010