Psoas

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Psoas \Pso"as\, n. [Gr. ? a muscle of the loin: cf. f. psoas.]
     (Anat.)
     An internal muscle arising from the lumbar vertebr[ae] and
     inserted into the femur. In man there are usually two on each
     side, and the larger one, or great psoas, forms a part of the
     iliopsoas.


     [1913 Webster]

From WordNet (r) 2.0 [wn]:

  psoas
       n : either of two muscles of the abdomen and pelvis that flex
           the trunk and rotate the thigh