Main Entry:

tu·ber

Pronunciation:

\ˈtü-bər, ˈtyü-\

Function:

noun

Etymology:

Latin, swelling, truffle; perhaps akin to Latin tumēre to swell — more at thumb

Date:

1668

1 a: 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 — compare bulb, corm b: a fleshy root or rhizome resembling a tuber2: tuberosity