\Ma*nu"bri*um\, n.; pl. L. {Manubria}, E.
{Manubriums}. [L., handle, fr. manus hand.]
1. (Anat.) A handlelike process or part; esp., the anterior
   segment of the sternum, or presternum, and the handlelike
   process of the malleus.

2. (Zo["o]l.) The proboscis of a jellyfish; -- called also
   {hypostoma}. See Illust. of {Hydromedusa}.