Ma·nu·bri·um n.; pl. L. Manubria E. Manubriums
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.
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manubrium
n : the upper part of the breastbone
[also: manubria (pl)]