Oreo cow
n.— «These days, the hills are dotted with grazing black-and-white cattle affectionately called “Oreo cows” by residents.» —“Stanford Hills” Palo Alto Online (California) Jan. 20, 2009. (source: Double-Tongued Dictionary)
Further reading
The highly specialized vocabulary of people who work outdoors, communicating with sled dogs, a word from the sport of rock-climbing, church key, browse line, smeuse, nitnoy, mommick, zawn, zwer, boom dog, and I think my pig is whistling. This...
The highest point on trees that grazing animals can reach is called the browse line. This is part of a complete episode.
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