twin skin
n.— «Maybe, I reasoned, I could still wear a two-piece tri suit so long as I wore a singlet long enough to conceal what us twin mamas lovingly refer to as “twin skin.”» —“Racing Like a Rookie” by Kara Douglass Thom Xtri.com July 28, 2006. (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 new Downton Abbey movie is a luscious treat for fans of the public-television period piece, but how accurate is the script when it comes to the vocabulary of the early 20th century? It may be jarring to hear the word swag, but it was already at...