a short fleshy usually underground stem bearing minute scale leaves each of which bears a bud in its axil and is potentially able to produce a new plant
tuber
noun(tu-ber)
a fleshy root or rhizome resembling a tuber
tuber
noun(tu-ber)
tuberosity
tuber
noun(tu-ber)
a person who engages in the sport or activity of riding an inner tube (as down a river or snowy slope) : one who participates in tubing