Manubrium

n.	1.
	1.	(Anat.) A handlelike process or part; esp., the anterior segment of the sternum, or presternum, and the handlelike process of the malleus.
	2.	(Zool.) The proboscis of a jellyfish; - called also hypostoma. See Illust. of Hydromedusa.

Noun

1.

manubrium - the upper part of the breastbone

bone, breastbone, os, sternum