1) Roughness 
knottiness; a knotty swelling
• (n.) A knot; a node. • (n.) The quality of being knotty or nodose; resemblance to a node or swelling; knottiness. • (n.) A knot; a node. • (n.) The quality of being knotty or nodose; resemblance to a node or swelling; knottiness.
1. A node; a knoblike or knotty swelling. ... 2. The condition of being nodose. ... Synonym: nodositas. ... Origin: L. Nodositas ... (05 Mar 2000) ... 
(no-dos´ĭ-te) a node. the quality of being nodose.
No·dos'i·ty noun [ Latin nodositas .] 1. The quality of being knotty or nodose; resemblance to a node or swelling; knottiness. Holland. 2. A knot; a node. 
nodosity, nodositas A knob-like swelling or node; knottiness.