adjective: (anatomy) Relating to or in the region of the lower jaw and the hyoid apparatus, or the mylohyoid muscle.
noun: (anatomy) Ellipsis of mylohyoid muscle.. [(anatomy) A flat triangular muscle located above the anterior belly of the digastric muscle, that runs from the mandible to the hyoid bone and is joined at a median raphe to its fellow of the opposite side, forming a large part of the muscular floor of the oral cavity.]