English

Noun

abdominal muscle ‎(plural abdominal muscles)

1. (often plural only) A group of four muscles that form the abdominal wall.

References

• Thomas, Clayton L., editor (1940) Taber's Encyclopedic Medical Dictionary, 5th edition, Philadelphia, PA: F. A. Davis Company, ISBN 0-8036-8313-8, published 1993, page 1