Noun
A handlelike process or part; esp., the anterior segment of the sternum, or presternum, and the handlelike process of the malleus.
The proboscis of a jellyfish; -- called also hypostoma. See Illust. of Hydromedusa.
Source: Webster's dictionaryBudding sites vary by species; from the tentacle bulbs, the manubrium (above the mouth), or the gonads of hydromedusae. Source: Internet
The manubrium is a stalk-like structure hanging down from the centre of the underside, often surrounded by oral arms, which connects with the mouth/anus at the base of the bell. Source: Internet