Definition of Abs
Abs: Commonly used slang for the abdominal muscles, the muscles running up and down in the abdominal wall. The "abs" contain the rectus abdominus muscle, "rectus" meaning straight."
Source: MedTerms™ Medical Dictionaryhttp://www.medterms.com/script/main/art.asp?articlekey=6979
Last Editorial Review: 4/7/2002
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