Definition of knotts:
(n) :
A looping of a piece of string or of any other long, flexible material that cannot be untangled without passing one or both ends of the material through its loops.
(n) :
A tangled clump of hair or similar.
(n) :
A maze-like pattern.
(n) :
(mathematics) A non-self-intersecting closed curve in (e.g., three-dimensional) space that is an abstraction of a knot (in sense 1 above).
(n) :
A difficult situation.
(n) :
The whorl left in lumber by the base of a branch growing out of the tree's trunk.