tuber: Meaning and Definition of

tu•ber

1. a fleshy, usually oblong or rounded thickening or outgrowth, as the potato, of a subterranean stem or shoot, bearing minute scalelike leaves with buds or eyes in their axils from which new plants may arise.
2. a rounded swelling or protuberance; a tuberosity; a tubercle.

tub•er

1. a person or thing that forms, installs, or operates with tubes.
2. Also calleda person who participates in the sport of tubing.