Icicle n. : A pendent, and usually conical, mass of ice, formed by freezing of dripping water; as, the icicles on the eaves of a house.

Example:
Any suggestions for christmas Icicle lights and gutter covers?

Taxonomy
Icicle, free encyclopedia, ice, tree, heat source, damage, search, water dripping, freezes, sunlight, ambient temperature, freezing point of water, refreeze, Over time, water runoff, ice deposits, Ice spike, Ice yacht.

Defination from the web:
icicles will form when ice or snow is melted by either sunlight or some other heat source (such as heat leaking from the interior of a ... If enough icicles forms on an object, the weight of the ice can severely damage the structural integrity of the object and may cause ...