Ice

You all know the song that Vanilla Ice ripped off of Queen's "Under Pressure." And if you know that pop culture reference, you certainly know that ice is frozen water. Period. However, ice can also refer to "something resembling frozen water" or "a frozen dessert consisting of water, sugar, and a liquid flavoring" (AHD). And when it comes to slang, this word delivers (I really didn't know what I was getting myself into with this "ice" choice). As a noun, it may refer to "a pebbly white form of methamphetamine that is smoked and considered highly addictive," "diamonds," or "a payment over the listed price of a ticket for a public event" (AHD). As a verb, it can mean, "to ensure of victory, as in a game; clinch," or "murder, kill" (AHD). While some of these slang terms are obviously related to the entity that actually is ice, I would have to venture a guess that the others come either from the world of ice hockey or the cold nature of the action being taken.

Not surprisingly, this word comes from the Old English word "is" (AHD). It seems like a word that any society would need, though I assume that those who originally used the term had no idea just how many definitions this word would adopt.