Gnarl (noun)
na-rl
A rough, knotty protuberance, especially on a tree.
Early 19th century back-formation from gnarled.
Example sentences
“The large gnarl pushed the two branches out, giving the illusion of splitting the blackthorn in two.”
Medley (noun) med-lee a mixture, especially of heterogeneous elements; hodgepodge; jumble. First recorded in 1300–50; Middle English noun and adjective medle(e), medlei(e), maedlai(e) “battle, war, quarrel; mixture, balanced mixture,” from…
The term ‘gnarly’ is used by offroad bikers to refer to riding over really difficult terrain that creates dangers for the riders.