turtle
n.— «A sewer is a slippery workplace. Water can move at the speed of oncoming traffic, even when it is not laden with tree branches, two-by-fours and the waste products known in the business as “turtles.”» —“Working in the Sewers Is a Dirty Job, but Someone’s Got to Win” by Ellen Barry New York Times May 9, 2007. (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...