kink

noun

1.
a painful muscle spasm especially in the neck or back (‘rick’ and ‘wrick’ are British)
crick rick wrick
2.
a sharp bend in a line produced when a line having a loop is pulled tight
twirl twist
Derived from:
kink
3.
a person with unusual sexual tastes
Derived from:
kinky
4.
an eccentric idea
Derived from:
kinky
5.
a difficulty or flaw in a plan or operation