dolphin kick
n.— «In layman’s terms, the dolphin kicks is an emulation of the way a dolphin cuts through the water with its flipper. Swimmers that use the dolphin kick replace a standard underwater “freestyle” kick with an explosive undulating motion powered from the swimmer’s core muscles.» —“Michael Phelps Writes New Chapter in Dolphin Kick History” by Scott Timed Finals Apr. 9, 2007. (source: Double-Tongued Dictionary)
Further reading
How do you transform ancient Chinese script for use in the modern age? English uses a keyboard with just 26 letters, but the first Chinese typewriter looked like a small table under a huge disk with more than 4,000 characters. A new book chronicles...
What’s up with ketchup? The shifting history and spelling of the name of this condiment. For centuries, ketchup was a fishy sauce originating in Asia—the tomatoes came only later! Plus, a new book shows what’s lost when a language dies: when there...