tuber 1
— tuberless , adj. — tuberoid , adj.
/tooh"beuhr, tyooh"-/ , n.
1. Bot. 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. Anat. a rounded swelling or protuberance; a tuberosity; a tubercle.
[ 1660-70; tuber bump, swelling. Compare truffle ]
tuber 2
/tooh"beuhr, tyooh"-/ , n.
1. a person or thing that forms, installs, or operates with tubes.
2. Also called inner-tuber . a person who participates in the sport of tubing.
[ 1920-25; TUBE + -ER 1 ]