tuber

• POS: Noun
• HYPHEN: tu=ber

CIDE DICTIONARY

tuber, n. [L., a hump. knob; probably akin to tumere to swell. Cf. Tumid.].

•  A fleshy, rounded stem or root, usually containing starchy matter, as the potato or arrowroot; a thickened root-stock. See Illust. of Tuberous.  [1913 Webster]
•  A tuberosity; a tubercle.  [1913 Webster]

OXFORD DICTIONARY

tuber, n.
1 a the short thick rounded part of a stem or rhizome, usu. found underground and covered with modified buds, e.g. in a potato. b the similar root of a dahlia etc.
2 Anat. a lump or swelling.

Etymology

L, = hump, swelling