geniohyoideus

ge·ni·o·hy·oid (mus·cle)

[TA]
one of the suprahyoid muscles of the neck; origin, mental spine of mandible; insertion, body of hyoid bone; action, draws hyoid forward, or depresses jaw when hyoid is fixed; nerve supply, fibers from ventral primary rami of first and second cervical spinal nerves conveyed by the hypoglossal nerve.

geniohyoideus

[jē′nē·ōhī·oi′dē·əs]
Etymology: Gk, genion, chin, hyoides, Y-shaped
one of the four suprahyoid muscles that draw the hyoid bone and the tongue forward. Also called geniohyoid muscle. Compare digastricus, mylohyoideus, stylohyoideus. See also suprahyoid muscles.