alligator hide
n.— «Sometimes, the tire fragments cause accidents. Damage to vehicles resulting from contact with flying “alligator hides”—or as a result of swerving to avoid them—is a common hazard of freeway driving.» —“Beware of the highway alligators” by Eric Peters Washington Times Nov. 10, 1998. (source: Double-Tongued Dictionary)
Further reading
Cat hair may be something you brush off, but cat hair is also a slang term that means “money.” In the same way, cat beer isn’t alcoholic — some people use cat beer as a joking term for “milk.” And imagine walking on a...
Have you ever googled your own name and found someone else who goes by the very same moniker? There’s a word for that: googleganger. Plus, the language of hobbyists and enthusiasts: If you’re a beekeeper, perhaps you call yourself a...