What is the meaning of Tuber?

A fleshy, thickened underground stem of a plant, usually containing stored starch, for example a potato or arrowroot.

A thickened rootstock.

A rounded, protuberant structure in a human or animal body.

One who tubes.

to make into a tube shape

to put into a tube

a hump, bump, swelling, protuberance; excrescence

the cyclamen or other similar plants with tuberous roots

a truffle (any of various edible fungi, of the genus Tuber)

a kind of tree or bush of foreign origin, possibly the azarole (Crataegus azarolus)

the fruit of the above tree

indefinite plural of tub

Source: wiktionary.org