designating or of a muscle that bellies out from both sides of its tendon, esp. such a muscle in the neck that helps to lower the jaw and indirectly moves the tongue
See digastric in American Heritage Dictionary 4
(dī-găsˈtrĭk)Anatomy
adjective
Having two fleshy ends connected by a thinner tendinous portion. Used of certain muscles.
noun
A muscle of the lower jaw that elevates the hyoid bone and assists in lowering the jaw.