hypostoma
Manubrium Ma*nu"bri*um, n.; pl. L. {Manubria}, E.
{Manubriums}. [L., handle, fr. manus hand.]
[1913 Webster]
1. (Anat.) A handlelike process or part; esp., the anterior
segment of the sternum, or presternum, and the handlelike
process of the malleus.
[1913 Webster]
2. (Zo["o]l.) The proboscis of a jellyfish; -- called also {hypostoma}. See Illust. of {Hydromedusa}. [1913 Webster]