egg-beating
n.— «Players are never allowed to touch the bottom of the pool and must tread water for the duration of a game. In order to do so, they employ a water-treading technique called “egg-beating.” The players assume a sitting position in the water and rotate their legs in opposite directions. This method frees up the players” hands while keeping their position stable in the water.» —“Breathlessly, Tech polo splashes on” by Neal Turnage Roanoke Times (Virginia) Apr. 6, 2008. (source: Double-Tongued Dictionary)
Further reading
A retronym is a word coined to distinguish something new from an older, more generic version, such as electric guitar or clock radio. A couple of new retronyms are fine water, or “unprocessed water that reflects a region’s terroir” and water...
The words tough, through, and dough all end in O-U-G-H. So why don’t they rhyme? A lively new book addresses the many quirks of English by explaining the history of words and phrases. And: have you ever been in a situation where a group makes...