waterbug
n.— «When a player (usually a guard) possesses extreme quickness, he is sometimes referred to as a “waterbug.”» —“A microscopic view into the playoffs” by Matt Stroup NBCSports.com Apr. 27, 2007. (source: Double-Tongued Dictionary)
Further reading
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...
The edge of the Grand Canyon. A remote mountaintop. A medieval cathedral. Some places are so mystical you feel like you’re close to another dimension of space and time. There’s a term for such locales: thin places. And: did you ever go...