a medical condition resulting in numbness and possible paralysis in the thumbs and wrists from excessive texting or Blackberry use.
by Peeper1818 February 4, 2010
A stomach that's been reduced to the size of a human thumb by means of bariatric surgery, or the surgical procedure itself.
"He lost sixty pounds in two months after getting the thumbach, but now his skin sags to his knees."
"'Yes, Virginia, 'thumbach' rhymes with 'stomach'."
"'Yes, Virginia, 'thumbach' rhymes with 'stomach'."
by nseaturtle December 16, 2013
by Ms.shegotitall February 10, 2017
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