- 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.
- a rounded swelling or protuberance; a tuberosity; a tubercle.
- a person or thing that forms, installs, or operates with tubes.
- a person who participates in the sport of tubing.
- a fleshy underground stem (as in the potato) or root (as in the dahlia) that is an organ of vegetative reproduction and food storage
- a raised area; swelling
