abdominal abdominal /æbˈdɒmɪnl/

adjective

1. () Of or relating to or near the abdomen  ( abdominal )
   of or relating to or near the abdomen
    Abdominal muscles
   abdominal muscles
   

noun

1. The muscles of the abdomen  ( ab , abdominal , abdominal muscle )
   the muscles of the abdomen
    She did crunches every morning to strengthen her abdominal muscles
   She did crunches every morning to strengthen her abdominal muscles