/ ˈnɒti; NAmE ˈnɑːti/ adjective ( knot·tier , knot·ti·est )
1.
complicated and difficult to solve
SYN thorny :
a knotty problem
2.
having parts that are hard and twisted together :
the knotty roots of the old oak tree
/ ˈnɒti; NAmE ˈnɑːti/ adjective ( knot·tier , knot·ti·est )
1.
complicated and difficult to solve
SYN thorny :
a knotty problem
2.
having parts that are hard and twisted together :
the knotty roots of the old oak tree
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005